Breakdown statistics

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A breakdown statistics documenting the most common causes of breakdowns on cars. It concluded how often the roadside assistance had to move out which vehicles were affected and what shortcomings had the vehicles. This ultimately results in statistics from which the most common defects in various vehicle models that can lead to stalling can be identified. Other defects that do not immediately mean that the journey is interrupted, but which can nevertheless result in costly repairs (e.g. leaky air conditioning, susceptibility to rust, defective shock absorbers, wheel bearings, etc.) are not included in these statistics.

The ADAC first published such breakdown statistics in 1967, which have been published annually since then. In 2014, 505,000 breakdown cases were evaluated. The one to six-year-old cars that were built essentially unchanged for at least 3 years and achieved at least 10,000 new registrations in one year were included in the evaluation. Lower registration numbers do not provide a sufficient statistical basis. The ADAC breakdown statistics are certified according to ISO 9001: 2008 .

Participation of the individual assemblies in the vehicle failures in 2016:

  • Battery: 35.7 percent
  • Engine management (ignition, injection & sensors): 15.2 percent
  • Other breakdowns (especially steering, brakes, chassis & body): 14.1 percent
  • Generator, lighting, starter & wiring: 11.9 percent
  • Engine: 6.7 percent
  • Tires: 6.5 percent
  • Fuel system: 5.0 percent
  • Cooling, heating, air conditioning: 3.5 percent
  • Exhaust systems, particle filters and catalytic converters: 1.4 percent

In addition to the ADAC breakdown statistics, the annual TÜV Auto Report, published by TÜV Media GmbH, provides statistics on the quality and safety of the various car models. However, deficiencies that were discovered during the main inspection serve as the data basis . A breakdown of the vehicle is therefore not a prerequisite (but rather an exclusion) for recording in statistics on the main inspection results. Breakdown statistics and statistics on the results of general inspections can therefore only be compared to a limited extent.

Representativeness

The representativeness of the ADAC breakdown statistics is controversial for the following reasons:

  1. The ADAC is not the only provider of breakdown services. Manufacturers, insurance companies and other automobile clubs also offer breakdown assistance.
  2. The statistics refer to the total number of vehicles registered and not to the members' actual vehicles. There may be differences here due to the different guarantees provided by the manufacturers.
  3. The mileage is extremely different for the vehicle types, for example between small cars and typical company cars. The ADAC uses correction factors within a vehicle class in order to take into account the different mileage. A comparison between the vehicle classes is only possible to a limited extent.
  4. The real causes of a breakdown cannot always be properly clarified. ADAC filters out self-inflicted breakdowns as much as possible

criticism

The ADAC breakdown statistics are criticized for not reflecting reality. The reason for this are so-called mobility guarantees, which car manufacturers offer their customers. With these offers, customers of this brand do not dial the number of the ADAC in the event of a breakdown, but that of the brand's own breakdown service. Often enough, however, this also commissions the ADAC, which then offers breakdown assistance on behalf of the manufacturer. Breakdowns that are processed by the ADAC within the framework of these mobility guarantees are not included in the breakdown statistics. In a way, this gives manufacturers the ability to influence the prestigious reliability ranking. The ADAC points out that taking these breakdowns into account would distort the statistics even more, as this would give advantages to manufacturers who have their own breakdown service (this applies to BMW and Volkswagen, for example). The ADAC is currently working with Opel, Peugeot, Ford, Honda, Kia, Mercedes, Nissan and Volvo, among others. The service provider is ADAC Service GmbH.

Web links

Individual evidence

  1. ↑ a b c d Breakdown statistics - methodology and background
  2. ↑ ADAC breakdown statistics - who breaks down and why automobilclubvergleich.de (report from February 2, 2017), accessed on June 21, 2017.
  3. ↑ Jens Uehlecke: " Every angel counts. The ADAC enjoys enormous trust. But its breakdown statistics have their pitfalls ". In: DIE ZEIT No. 21, page 28 (from May 19, 2005)
  4. ↑ Motorwelt 5/2013 p. 40