Porsche 964
Porsche | |
---|---|
964 | |
Sales designation: | Porsche 911 |
Production period: | 1989-1994 |
Class : | Sports car |
Body versions : | Coupé , cabriolet , roadster |
Engines: |
Gasoline engines : 3.3-3.8 liters (184-280 kW) |
Length: | 4250 mm |
Width: | 1652 mm |
Height: | 1320 mm |
Wheelbase : | 2272 mm |
Empty weight : | 1350-1470 kg |
Previous model | Porsche 911 |
successor | Porsche 993 |
The Porsche 964 is a sports car from the automobile manufacturer Porsche . It is the successor model of the Porsche 911 "G-Model" and came on the market in 1989.
The 964 was offered with both rear-wheel drive Carrera 2 and all-wheel drive Carrera 4 . In general, equipment was available for the Porsche 964 that was not offered on the previous model, such as power steering and anti-lock braking system .
The engine output of the 964 ranges from 184 kW (250 hp) for the Carrera models to 265 kW (360 hp) for the turbo model.
Model creation
After the Porsche 911 had been in production for over 15 years, a model change was urgently needed. Porsche found itself in a serious crisis at the end of the 1980s. The Porsche 944 , with which Porsche achieved its largest turnover, could no longer be sold with the hoped-for figures.
The customers who wanted to drive a Porsche 911 also changed. When making a purchase decision , it was no longer just the driving performance of the car that was in the foreground, but also driving comfort. The basic design of the 911 was still based on the state of the 1960s and in many parts it was no longer up to date. Although the 911 was continuously improved, the end of the commercially viable possibilities had been reached.
In order to be able to offer a modern and marketable vehicle again, the Porsche 964 was developed. When developing this model, Porsche was able to fall back on extensive know-how thanks to earlier prototypes and small-series models such as the Porsche 959 .
The 964 therefore contains many technical solutions that did not exist in the Porsche 911: for the first time, a mass-produced vehicle with all-wheel drive was offered by Porsche. The new concept was a simplified version of the 959 drive technology.
Furthermore, Porsche rejected the torsion bar suspension of the types 356 and 911, which had been in use for 40 years : The 964 got a completely new light alloy chassis with MacPherson struts at the front and coil springs on the trailing arms at the rear. Power steering and anti-lock braking systems were standard; the new 3.6 liter engine got a double ignition with knock control and a regulated three-way catalytic converter .
Despite the many innovations, the sales designation Porsche 911 was retained; At this point in time, the term 911 was already too closely associated with Porsche to be without it. In addition, the characteristics of the Porsche 964 aimed at the expectations of 911 customers for a sports car in the late 1980s.
The marketing of the vehicle was supported by a memorable advertisement designed and conceived by the " Jung von Matt " advertising agency :
"You can have breakfast longer. You're back for dinner earlier. Is there a better family car? ”
The Porsche 964 was very successful in sales and is still very popular on the used car market today.
body
The Porsche 964, which was sold from 1989 onwards, is the first major revision of the 911 body shape since the "G" model built from 1973 onwards .
The G-model has been revised in many points, with the largest external changes to the bumpers. From the outside you don't see any major changes, but under the hood 87% of all parts have been revised. The new bumpers were stronger than those of the previous model. Thanks to the aerodynamically more favorable body shape and, above all, the full paneling of the vehicle floor, an unmatched drag coefficient (C w ) of 0.32 was achieved in the 911 . A 964 with 250 PS reaches the same top speed of around 260 km / h as the 37 kW (50 PS) more powerful Porsche 911 Turbo (Type 930) from the old G model series.
The rear spoiler of the 964, which extended automatically at a speed of approx. 80 km / h, replaced the previously fixed rear spoiler on all Carrera models. This causes better aerodynamics and better engine cooling.
Initially, the car was only offered as a Carrera 4 with all-wheel drive parallel to the 911 Carrera 3.2 model of the old form. From 1989 (model year 1990 / L program) the Porsche 964 was also available with rear-wheel drive as the Carrera 2 . Both models were sold in the body versions Coupé , Cabriolet and Targa .
The top model 911 Turbo based on the 964 came onto the market in the 1991 model year (M program). In this model, many features of the old turbo model ( Porsche 930 ), such as the wide front and rear fenders and the fixed large rear spoiler, have been adopted. The proven engine type 930 of the previous model was used as the drive, the output of which has been increased to 235 kW (320 hp) with an improved engine management system and a 30% larger charge air cooler.
In 1993 (model year 94 / R program) the Speedster was built as an independent model of the 964 series in a small series of only 930 pieces. The basis for the Speedster was the 964 Carrera 2 Cabriolet with a shortened windscreen and modified roof construction. The rear view with the two "humps" is particularly striking. Furthermore, at the customer's request, the Porsche Exclusive department built around 15 Turbo-Look Speedsters with a wide body.
Engine / gear
With the 964, too, Porsche continued to rely on the tried and tested air-cooled six-cylinder boxer engine with dry sump lubrication , which was further developed by Bosch with double ignition and an improved electronic engine control system DME (digital engine electronics) .
The engine, which has been enlarged by 400 cm³ to 3.6 liters, delivers an output of 184 kW (250 hp) at a speed of 6100 rpm. Another innovation was the DME with integrated knock control (a knock sensor on the left and right, cylinder rows 1–3 and 4–6 are connected via the cylinder heads), which automatically adjusts the ignition point to the fuel quality. Together with the aerodynamically improved body, this enabled fuel consumption to be reduced compared to the old 3.2-liter engine. The tank was therefore reduced from 85 liters of the previous model to 77 liters, which benefited the trunk size.
After the semi-automatic “Sportomatic” produced from 1968 to 1980, an automatic transmission in the 911 was again available in the 964 Carrera 2 with the “ Tiptronic ” from January 1990 . In addition to fully automatic gear selection, the Tiptronic also offers the driver the option of manually selecting the four speed levels. The tiptronic development was based on the Porsche 962 used Porsche double-clutch (PDK) of racing.
From model year 1991 onwards, in addition to the Carrera and Speedster models with 184 kW (250 PS), there was also the new top model 911 Turbo with turbocharger and intercooler . As with the Porsche 930, its engine initially had a displacement of 3.3 liters and developed 235 kW (320 hp). From January 1993 the new engine type M64 with a larger displacement of 3.6 liters was also used for the "Turbo", which now achieves an output of 265 kW (360 hp) with the same turbocharger and intercooler as its predecessor. The 3.6 liter turbo model has a 92 liter fuel tank as standard . In the 964 Turbo, as in the successor 993 Turbo , the otherwise used double ignition was dispensed with.
All models are equipped with a regulated three-way catalytic converter .
inner space
The interior of the 964 has only been redesigned in a few details compared to the previous model. The new center console with the short gearshift lever and the backlit instruments with transmitted light technology are eye-catching, with symbols and lettering only appearing when they are necessary to inform the driver.
The airbags on the driver and front passenger side, which had previously only been offered at an extra charge, were standard from February 1991. An exception was the Carrera RS , where no airbags were provided.
Special models
Anniversary model "30 years 911"
An anniversary model of the Porsche 964 was produced, which stands out from the series models thanks to its particularly extensive and in some cases unique equipment. From 1993 a series of the 964 limited to 911 units was launched for the 30th anniversary of the Porsche 911. These vehicles were built in the model year 1993 "P-Program" and 1994 "R-Program". The special model “30 Years of 911” was the all-wheel drive “Carrera 4” variant of the 964 with the wide coupé body of the turbo model. The voluminous rear spoiler was dropped in favor of a more harmonious and elegant shape. The automatically extending rear spoiler remained analogous to the standard models. Basically, the model was only available in three liveries. Viola Metallic was the exclusive color for the German market. Most of the special models were made in this color. In addition, there were amethyst metallic and polar silver metallic as standard colors. The special model is externally recognizable by two badges on the hat shelf. One of them bears the engraved limitation number of the respective vehicle and the lettering "911 30 years" is on the engine cover. Inside there was a leather interior and the dials of the instruments in the special color Rubicon gray. The 3.6 liter boxer engine corresponds to that of the standard Carrera with 184 kW (250 hp) at 6100 rpm.
911 Carrera RS America
Since the Carrera RS could not be standardized for the US market due to legal requirements, Porsche launched the RS America from 1993. This was based on the production version of the Carrera 2, but with a rigid rear spoiler and a sporty chassis. The interior features two fabric-covered sports seats and the door panels of the Carrera RS with electric windows, central locking, alarm system and a luggage rack at the rear. A total of 701 pieces were built.
911 Carrera RS 3.8
In 1993, the new sports helper, developed in the Porsche racing department in Weissach- Flacht and available in a small series of just 90 as the 911 Carrera RS 3.8 and 911 Carrera RSR 3.8 - 221 kW (300 PS) - added to the model range. With its air-cooled, 3746 cm³ six-cylinder boxer engine and the body in the turbo look as well as the 235/40 ZR 18 (front) and 285/35 ZR 18 (rear) large tires - on the front axle 9J × 18 large and on the rear axle 11J × 18 large three-part Speedline wheels it marks the highlight of the Carrera RS models and the 964 series for some 911 fans. In contrast to the normal RS models, it is equipped with aluminum doors.
Racing versions
911/964 Cup
Based on the Porsche 964, the racing version for the new Porsche Carrera Cup was created in 1990 . The 964 Cup got a roll cage and a modified chassis setup. The output has been increased by 11 kW to 195 kW (265 hp). The ground clearance was 55 mm less than the production version. To reduce weight, no passenger seats and no insulation material were installed. Gears three, four and five of the five-speed gearbox had a shorter gear ratio and the steering without power assistance was designed to be more direct. The vehicle had a catalytic converter and an anti-lock braking system .
In 1992 the 964 Cup received a major makeover. The vehicle got the body of the 964 RS and the engine now developed 202 kW (275 PS). Another major change was the ABS, which can be switched off in the event of emergency braking. Furthermore, the vehicle now has 18-inch wheels made of magnesium instead of aluminum. At the rear, the car was lowered by a further 20 mm.
Technical specifications
model | Porsche 964 Cup | |
---|---|---|
Construction year | 1990-1991 | 1992-1993 |
engine | 3.6 liter six-cylinder boxer engine | 3.6 liter six-cylinder boxer engine |
power | 195 kW (265 hp) at 6100 rpm | 202 kW (275 hp) at 6100 rpm |
Torque | 310 Nm at 4800 rpm | 314 Nm at 4800 rpm |
Empty weight | 1120 kg | 1120 kg |
911 Carrera RSR 3.8
The 964 Carrera RSR 3.8 was based on the Porsche 964 Carrera RS and was used in the ADAC GT Cup from 1994 .
The weight of the vehicle has been reduced to 1120 kg by using plastic on the rear wing and reducing the interior fittings. Its six-cylinder boxer engine developed up to 257 kW (350 hp). Depending on the ratio of the five-speed transmission, the vehicle reached a top speed of 265 to 280 km / h. The suspension was with adjustable stabilizers and the braking system of the 911 Turbo S equipped. There were two different tank sizes with 63 and 120 liters capacity, depending on the purpose of the race. In the ADAC GT Cup, however, the engine output had to be reduced to 239 kW (325 hp) and the vehicle weight increased to 1,300 kg due to the regulations.
Technical specifications
model | 964 Carrera RSR 3.8 |
---|---|
Construction year | 1994 |
engine | 3.8 liter six-cylinder boxer engine |
power | 239 kW (325 hp) at 6900 rpm |
Torque | k. A. |
Empty weight | 1120 kg |
Technical data of the series versions
The 964 model range was quite extensive. This was produced from 1989 to 1994 in the following versions. It was optionally available in the body shape of coupé, targa and convertible. Exceptions are the Turbo and the Speedster. The Turbo was only available as a coupe and the Speedster only as a convertible. The Turbo 3.6 was produced in a limited edition of only 1436 vehicles.
Porsche 964: | 911 Carrera 2 | 911 Carrera 4 | 911 Speedster | 911 Turbo | 911 Turbo 3.6 |
---|---|---|---|---|---|
Engine: | 6-cylinder boxer engine (four-stroke) | 6-cylinder boxer engine with turbocharging | |||
Displacement: | 3600 cc | 3299 cc | 3600 cc | ||
Bore × stroke: | 100.0 x 76.4 mm | 97.0 x 74.4 mm | 100.0 x 76.4 mm | ||
Performance at 1 / min: | 184 kW (250 hp) at 6100 | 235 kW (320 PS) at 5750 |
265 kW (360 hp) at 5500 |
||
Max. Torque at 1 / min: | 310 Nm at 4800 | 450 Nm at 4400 | 520 Nm at 4200 | ||
Compression: | 11.3: 1 | 7.0: 1 | 7.5: 1 | ||
Valve control: | one overhead camshaft per cylinder bank, driven by two hydraulically tensioned roller chains | ||||
Cooling: | Air cooling (fan) | ||||
Transmission: | 5-speed gearbox or 4-speed automatic (Tiptronic), rear-wheel drive | 5-speed gearbox, all-wheel drive | 5-speed gearbox, rear-wheel drive | ||
Brakes: | internally ventilated disc brakes, ABS | ||||
Front suspension: | individually on MacPherson struts , wishbones, stabilizer, coil springs | ||||
Rear suspension: | individually on trailing arms , stabilizer, coil springs | ||||
Body: | Self-supporting sheet steel body with an automatically extending rear spoiler from 80 km / h | Self-supporting steel body with a fixed rear wing | |||
Track width front / rear: | 1380/1374 mm | 1380/1371 mm | 1442/1499 mm | 1440/1506 mm | |
Wheelbase : | 2272 mm | ||||
Tires rim: | Front: 205/55 ZR 16 on 6 J × 16 rear: 225/50 ZR 16 on 8 J × 16 |
Front: 205/50 ZR 17 on 7.5 J × 17 rear : 255/40 ZR 17 on 9 J × 17 |
Front: 225/40 ZR 18 on 8 J × 18 rear : 265/35 ZR 18 on 10 J × 18 |
||
Dimensions L × W × H: | 4250 × 1652 × 1310 mm | 4250 × 1775 × 1310 mm | |||
Empty weight : | 1350 kg | 1450 kg | 1350 kg | 1470 kg | |
Top speed: | 260 km / h (256 km / h with Tiptronic) | 270 km / h | 280 km / h | ||
Acceleration 0 - 100 km / h: | 5.7 s (6.6 s with Tiptronic) | 5.0 s | 4.8 s | ||
Fuel consumption over 100 km: | 14.0 l | 22.8 l | 18.0 l | ||
Price 1992 (with manual transmission) | 122,340 DM | 135,550 DM | 131,500 DM | 190,250 DM (1991) | 204,000 DM |
Technical data of the sport / street versions
For customers for whom the production versions were too good, Porsche offered sportier vehicles approved for use on public roads. These models are designed according to the motto "more engine power with a low vehicle weight" and were produced exclusively as coupé.
Porsche 964: | 911 Carrera RS u. RS N / GT |
911 RS America | 911 Carrera RS 3.8 | 911 Turbo S. |
---|---|---|---|---|
Engine: | 6-cylinder boxer naturally aspirated engine (four-stroke) | 6-cylinder boxer engine with turbocharging | ||
Displacement: | 3600 cc | 3746 cc | 3299 cc | |
Bore × stroke: | 100.0 x 76.4 mm | 102.0 x 76.4 mm | 97.0 x 74.4 mm | |
Performance at 1 / min: | 191 kW (260 hp) at 6200 | 184 kW (250 hp) at 6100 | 221 kW (300 hp) at 6500 | 280 kW (381 hp) at 6000 |
Max. Torque at 1 / min: | 325 Nm at 4800 | 310 Nm at 4800 | 360 Nm at 5250 | 490 Nm at 4800 |
Compression: | 11.3: 1 | 11.0: 1 | 7.0: 1 | |
Valve control: | two overhead camshafts | |||
Cooling: | Air cooling (fan) | |||
Transmission: | 5-speed gearbox, rear-wheel drive | |||
Brakes: | Disc brakes (internally ventilated), Bosch ABS | |||
Front suspension: | individually on MacPherson struts, wishbones, stabilizer, coil springs | |||
Rear suspension: | individually on trailing arms, stabilizer, coil springs | |||
Body: | Self-supporting steel body with retractable rear spoiler | Self-supporting steel body with a fixed rear wing | ||
Track width front / rear: | 1379/1380 mm | 1380/1374 mm | 1413/1452 mm | 1440/1481 mm |
Wheelbase : | 2272 mm | |||
Tires rim: | Front: 205/50 ZR 17 on 7.5 J × 17 rear : 255/40 ZR 17 on 9 J × 17 |
Front: 225/40 ZR 18 on 8 J × 18 rear : 265/35 ZR 18 on 10 J × 18 |
||
Dimensions L × W × H: | 4275 × 1652 × 1270 mm | 4275 × 1775 × 1270 mm | ||
Empty weight : | 1220 kg (1150 kg without sound insulation) |
1350 kg | 1249 kg | 1290 kg |
Top speed: | 260 km / h | 271 km / h | 290 km / h | |
Acceleration 0 - 100 km / h: | 5.3 s | 5.4 s | 5.2 s | 4.7 s |
Fuel consumption over 100 km: | 15.0 l | 14.0 l | 15.3 l | 15.0 l |
Number of pieces: | 1280/290 (20 RS with all-wheel drive) | 701 | 90 (including RSR 3.8) | 86 |
List price: | 1991: 145,450 DM 1992: 160,000 DM |
1993: $ 53,900 |
1993: 225,000 DM |
1991: 295,000 DM |
Test values
Porsche 964: | 911 Carrera 4 | 911 Carrera RS | 911 Carrera RS 3.8 | 911 Turbo | 911 Turbo S. | 911 Turbo 3.6 |
---|---|---|---|---|---|---|
Top speed: | 262 km / h | 263 km / h | 271 km / h | 275 km / h | 294 km / h | 289 km / h |
Acceleration 0 - 80 km / h: | 4.0 s | 4.0 s | 3.9 s | 3.8 s | 3.8 s | 3.5 s |
Acceleration 0 - 100 km / h: | 5.2 s | 5.2 s | 5.2 s | 5.2 s | 4.8 s | 4.6 s |
Acceleration 0 - 120 km / h: | 7.2 s | - | 6.7 s | 6.8 s | 6.3 s | - |
Acceleration 0 - 140 km / h: | 9.5 s | 8.9 s | 8.7 s | - | 8.1 s | 7.5 s |
Acceleration 0 - 160 km / h: | 12.5 s | - | 10.9 s | 11.5 s | 9.8 s | 9.5 s |
Acceleration 0 - 180 km / h: | 16.2 s | 14.7 s | 14.0 s | 15.2 s | 12.6 s | - |
Acceleration 0 - 200 km / h: | 21.0 s | 19.0 s | 17.5 s | 19.3 s | 15.8 s | 15.0 s |
400 m with a standing start | 13.4 s | - | - | - | - | - |
1 km with a standing start | 24.7 s | 24.1 s | 23.7 s | 24.3 s | - | 22.5 s |
Graphic representation of the 964 development
Porsche 964 road vehicle history from 1989 to 1994 | |||||||||||||||||||||
model | power | 1980s | 1990s | ||||||||||||||||||
0 | 1 | 2 | 3 | 4th | 5 | 6th | 7th | 8th | 9 | 0 | 1 | 2 | 3 | 4th | 5 | 6th | 7th | 8th | 9 | ||
964 | |||||||||||||||||||||
911 Carrera 2 | 184 kW / 250 PS | ||||||||||||||||||||
911 Carrera 4 | 184 kW / 250 PS | ||||||||||||||||||||
911 Turbo 3.3 | 235 kW / 320 PS | ||||||||||||||||||||
911 Turbo 3.6 | 265 kW / 360 PS | ||||||||||||||||||||
911 Speedster | 184 kW / 250 PS | ||||||||||||||||||||
911 RS | 191 kW / 260 PS | ||||||||||||||||||||
911 RS 3.8 | 221 kW / 300 PS | ||||||||||||||||||||
911 Turbo S. | 280 kW / 381 PS | ||||||||||||||||||||
Color legend: | |||||||||||||||||||||
green | Production versions of the 911 | ||||||||||||||||||||
blue | Sport / street versions of the 911 |
Existence in Germany
The stock of Porsche 964 is listed according to manufacturer (HSN) and type code numbers (TSN) in Germany according to the Federal Motor Transport Authority . Types with less than 100 vehicles are not shown. Up until 2007, the inventory contained both the number of vehicles registered and the number of temporary shutdowns. Since 2008, the inventory has only included "flowing traffic" including the seasonal license plates.
HSN / TSN | model | kW | 1.1.2005 | 1.1.2006 | 1.1.2008 | 1.1.2009 | 1.1.2010 | 1.1.2011 | 1.1.2012 | 1.1.2013 | 1.1.2014 | 1.1.2015 |
---|---|---|---|---|---|---|---|---|---|---|---|---|
0583/418 | 911 Carrera 4 | 184 | 2,071 | 1,990 | 1,592 | 1,592 | 1,607 | 1,601 | 1,622 | 1,666 | 1,703 | 1,776 |
0583/423 | 911 Carrera 4 Cabriolet | 184 | 1,290 | 1,275 | 1,053 | 1,058 | 1,082 | 1,089 | 1.107 | 1,134 | 1,126 | 1,144 |
0583/424 | 911 Carrera 2 | 184 | 3,033 | 2,957 | 2,342 | 2,341 | 2,326 | 2,342 | 2,427 | 2,504 | 2,562 | 2,622 |
0583/425 | 911 Carrera 2 Cabriolet | 184 | 4,315 | 4,264 | 3,475 | 3,519 | 3,564 | 3,588 | 3,649 | 3,753 | 3,833 | 3,937 |
0583/426 | 911 Turbo | 235 | 379 | 369 | 268 | 262 | 267 | 256 | 263 | 261 | 260 | 264 |
0583/431 | 911 Carrera RS | 191 | 509 | 470 | 293 | 290 | 299 | 302 | 313 | 308 | 328 | 314 |
0583/433 | 911 Turbo 3.6 | 265 | 164 | 162 | 119 | 117 | 123 | 110 | 113 | 127 | 124 | 122 |
source |
Picture gallery
Conversions
Some tuning manufacturers offered 959 body conversion kits for the Porsche 964. Vehicles modified in this way look very similar to an original Porsche 959 from the outside. Nevertheless, a conversion can be seen on some features - especially on the front of the car.
The headlights of the 959 are flatter in the fenders and have different lenses. Headlights from the Porsche 993 are used for the conversion . On the original, the fenders and bumper are separate units. The front ventilation opening in the bumper runs across the entire width of the car. In the original, the indicators are led around the edge of the bumper. In the replica, the front fenders and the bumper consist of one element. The ventilation opening for the oil cooler is smaller and the indicators are also smaller than on the 959.
Another difference is the location for the filler neck of the petrol tank. The original has an opening for this in the front hood. In the replica, the tank filler neck is on the driver's side in the front fender like the standard 964.
The 959 was delivered with different exterior mirrors, while the normal exterior mirrors of the 964 were retained in the replica.
Vehicles converted in this way with the 964 series boxer engine with 184 kW (250 PS) do not offer any comparable performance compared to the original, whose boxer engine develops 331 kW (450 PS).
literature
- Thomas Agethen, Sigmund Walter: Type compass Porsche. Passenger cars since 1948. Motorbuch Verlag, Stuttgart 2003, ISBN 3-613-02157-9 .
- Tobias Aichele: Porsche 911 - Forever young. Motorbuch Verlag, Stuttgart 2004, ISBN 3-613-01546-3 .
- Marc Bongers: Porsche. Series vehicles and sports cars since 1948. Motorbuch Verlag, Stuttgart 2004, ISBN 3-613-02388-1 .
- Paul Frère: The Porsche 911 Story. Motorbuch Verlag, Stuttgart 2002, ISBN 3-613-02225-7 .
- Achim Kubiak: Fascination 911. The typology of the Porsche 911. Delius Klasing Verlag, Bielefeld 2004, ISBN 3-7688-1581-1 .
- Randy Leffingwell: Porsche 911 - Perfection and Design. Heel Verlag, Königswinter 2007, ISBN 3-89880-641-3 .
- Nicky Wright: Porsche. Dream car made in Germany. Orbis Verlag, ISBN 3-572-09989-7 .
- Adrian Streather: Porsche 911. Enthusiast's Companion; Carrera 2, Carrera 4 and Turbo 1989-1994. Order number 964, Bently Publishers.
- Purchase advice in Oldtimer-Markt 9/2009 p. 46 ff.
Web links
- Porsche 964 Carrera 2 Cup (1990–91) on the Porsche website
- Porsche 964 Carrera 2 Cup (1992–93) on the Porsche website
- Porsche 964 Carrera RSR 3.8 on the official Porsche website
Individual evidence
- ↑ Porsche 964 Carrera RS - less is sometimes more Test report with historical pictures on Zwischengas.com (last accessed May 16, 2017)
- ↑ Austen, Jörg; Walter, Sigmund: Porsche 911. The technical documentation from 1963 to 2009. Motorbuch Verlag, Stuttgart 2008, ISBN 978-3-613-02973-6 , p. 172.
- ↑ sport auto 8/1989 pp. 118–125
- ↑ auto motor und sport 24/1991 pp. 66–73
- ↑ auto motor und sport 20/1993
- ↑ auto motor und sport ?? / 1991 Archived copy ( Memento from January 22, 2017 in the Internet Archive )
- ↑ sport auto 5/1992
- ↑ auto motor und sport 5/1993 pp. 54–57
- ↑ The number of passenger cars on January 1, 2005 by manufacturer and type with selected features. (PDF) In: Statistische Mitteilungen des Kraftfahrt-Bundesamt, special issue 4 for series 2, January 1, 2005. Kraftfahrt-Bundesamt, May 2005, p. 77 , archived from the original on March 18, 2006 ; accessed on November 2, 2015 .
- ↑ The number of passenger cars on January 1, 2006 by manufacturer, trade name, selected features and displacement classes. (PDF) In: Statistische Mitteilungen des Kraftfahrt-Bundesamt, special edition 4 for series 2, January 1, 2006. Kraftfahrt-Bundesamt, June 2006, p. 115 , archived from the original on October 9, 2006 ; accessed on November 2, 2015 .
- ↑ The number of passenger cars on January 1, 2008 by manufacturer, trade name, selected features and displacement classes. (PDF) In: Statistische Mitteilungen des Kraftfahrt-Bundesamt FZ 2, January 1, 2008. Kraftfahrt-Bundesamt, June 2008, p. 124 , accessed on November 2, 2015 .
- ↑ The number of passenger cars on January 1, 2009 by manufacturer, trade name, selected features and cubic capacity. (PDF) In: Statistische Mitteilungen des Kraftfahrt-Bundesamt FZ 2, January 1, 2009. Kraftfahrt-Bundesamt, July 2009, pp. 132, 133 , accessed on November 2, 2015 .
- ↑ The number of passenger cars on January 1, 2010 by manufacturer, trade name, selected features and cubic capacity. (PDF) In: Statistische Mitteilungen des Kraftfahrt-Bundesamt FZ 2, January 1, 2010. Kraftfahrt-Bundesamt, July 2010, pp. 132, 133 , accessed on November 2, 2015 .
- ↑ The number of passenger cars on January 1, 2011 by manufacturer, trade name, selected features and cubic capacity. (PDF) In: Statistische Mitteilungen des Kraftfahrt-Bundesamt FZ 2, January 1, 2011. Kraftfahrt-Bundesamt, July 2011, pp. 139, 140 , accessed on November 2, 2015 .
- ↑ The number of passenger cars on January 1, 2012 by manufacturer, trade name, selected features and cubic capacity. (PDF) In: Statistische Mitteilungen des Kraftfahrt-Bundesamt FZ 2, January 1, 2012. Kraftfahrt-Bundesamt, July 2012, pp. 144, 145 , accessed on November 2, 2015 .
- ↑ Passenger car inventory on January 1, 2013 by manufacturer, trade name and selected features. (PDF) In: Statistische Mitteilungen des Kraftfahrt-Bundesamt FZ 2, January 1, 2013. Kraftfahrt-Bundesamt, July 2013, pp. 104, 105 , accessed on November 2, 2015 .
- ↑ Passenger car inventory on January 1, 2014 by manufacturer, trade name and selected features. (PDF) In: Statistische Mitteilungen des Kraftfahrt-Bundesamt FZ 2, January 1, 2014. Kraftfahrt-Bundesamt, July 2014, pp. 107, 108 , accessed on November 2, 2015 .
- ↑ Passenger car inventory on January 1, 2015 by manufacturer, trade name and selected features. (PDF) In: Statistical Communications of the Federal Motor Transport Authority FZ 2, January 1, 2015. Federal Motor Transport Authority, July 2015, pp. 109, 110 , accessed on November 2, 2015 .