Audi 100
From 444 MOT tests. Average for its class.
Common MOT failure categories
What goes wrong?
The most common MOT failure reasons are emissions levels exceed default limits, a transmission shaft constant velocity joint boot missing or no longer prevents the ingress of dirt etc and the aim of a headlamp is not within limits laid down in the requirements. The top issue, emissions levels exceed default limits, caused 23 failures in 2024. If you need repairs before retesting, sites like BookMyGarage let you compare local prices.
| emissions levels exceed default limits | 23 |
| a transmission shaft constant velocity joint boot missing or no longer prevents the ingress of dirt etc | 16 |
| the aim of a headlamp is not within limits laid down in the requirements | 15 |
| a suspension pin, bush or joint excessively worn | 14 |
| windscreen washers not working or not providing sufficient fluid to clear the windscreen | 13 |
| significant brake effort recorded with no brake applied indicating a binding brake | 11 |
| emissions levels exceed the manufacturer's specified limits | 10 |
| parking brake efficiency below minimum requirement | 9 |
| a flexible brake hose excessively damaged, deteriorated, chafed, twisted or stretched | 8 |
| a rear registration plate lamp or light source missing or inoperative in the case of multiple lamps or light sources | 8 |
How serious are these failures?
Not all MOT failures are equal. 39.4% of failures are serious: 26.8% are safety issues (brakes, steering, tyre damage) and 12.6% could actually leave you stranded. That's close to the 44.4% average across all models. When it does fail, the average repair bill is around £110.
Audi 100 on UK roads
The fleet is shrinking: 53 scrapped or exported in the past year, a net loss of 53. At this rate, roughly 20.2 years until none remain. Now at 2.1% of its peak (50,429 in 1994 Q4).
Quarterly breakdown
| Quarter | On road | SORN | New | Gone | Net |
|---|---|---|---|---|---|
| 2025 Q3 | 263 | 785 | +0 | -14 | -14 |
| 2025 Q2 | 264 | 798 | +0 | -4 | -4 |
| 2025 Q1 | 265 | 801 | +0 | -8 | -8 |
| 2024 Q4 | 273 | 801 | +0 | -27 | -27 |
| 2024 Q3 | 286 | 815 | +0 | -40 | -40 |
| 2024 Q2 | 328 | 813 | +1 | -7 | -6 |
| 2024 Q1 | 332 | 815 | +0 | -2 | -2 |
| 2023 Q4 | 334 | 815 | +0 | -12 | -12 |
Source: DfT vehicle licensing statistics, 2025 Q3. Crown copyright, OGL v3.0.
Typical mileage
Half of all 100s tested had between 104,773 and 170,061 miles on the clock. A significant number are high-mileage vehicles.
At 135,093 median miles, the 100 has 0.019 failures per 10,000 miles driven.
Other Audi models
Common questions
What is the Audi 100 MOT pass rate?
The Audi 100 has a 74.8% MOT pass rate based on 444 real MOT tests. This is around the national average.
What are common MOT failures on a Audi 100?
The most common MOT failure on the Audi 100 is emissions levels exceed default limits, which caused 23 failures. Other common issues include a transmission shaft constant velocity joint boot missing or no longer prevents the ingress of dirt etc.
How many Audi 100s are on UK roads?
There are 263 Audi 100s currently licensed on UK roads, with 785 on SORN.
What is the typical mileage of a Audi 100 at MOT?
The median mileage at MOT for a Audi 100 is 135,093 miles. The middle 50% of vehicles tested have between 104,773 and 170,061 miles.
Buying a used 100?
Start with the free tools. Look up the specific vehicle's MOT history on GOV.UK The mileage at each test will show if it's been wound back, and the advisory history tells you what's wearing. Cross-reference that against the typical failures above to see if anything looks unusual for this model.
The free data won't tell you about outstanding finance, theft markers, or write-off history. For that, you need a vehicle history check This is especially important on a private sale where you have fewer legal protections.
With a 74.8% pass rate and an average repair bill of £110 when things go wrong, budget accordingly.
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MOT data from DVSA anonymised test results, 2024 test year. Fleet data from DfT vehicle licensing statistics. Crown copyright, OGL v3.0. MOT pass rates are statistical summaries of test outcomes, not assessments of individual vehicle safety or condition. Always inspect a vehicle and check its full MOT history before purchasing. See terms of use.