AUDI A8 (1999)
Running costs, common problems, and reliability data based on 192 real MOT tests in 2024.
MOT Pass Rate
80%
Total Tests (2024)
192
Avg Mileage
140,354 mi
Est. Annual Cost
£2,247
Is the 1999 AUDI A8 reliable?
Good reliability. Occasional issues but generally solid. That's close to the national average of 82%. It falls below the AUDI brand average of 90%.
At 25 years old, 80% of AUDI A8s from 1999 passed their MOT first time in 2024. That's based on 192 tests across the UK. The average mileage at this age is 140,354 miles.
How does the 1999 AUDI A8 compare?
Mileage Analysis
The average 1999 AUDI A8 has 140,354 miles on the clock, which is below the expected 185,000 miles for a 25-year-old car. This suggests lighter use than average, which generally means less wear on major components.
Best year to buy a AUDI A8?
The most reliable year is the 2021 model with a 98% MOT pass rate, while the 2000 model has the lowest at 77%. The 1999 sits between the two at 80%.
How much does a 1999 AUDI A8 cost to run?
Based on 7,400 miles/year (UK average), current fuel prices, and repair likelihood from MOT pass rate data. Insurance not included.
AUDI A8 by Year
| Year | Pass Rate | Tests | Avg Mileage |
|---|---|---|---|
| 2021 | 98% | 170 | 35,071 mi |
| 2020 | 96% | 599 | 39,317 mi |
| 2019 | 95% | 1,932 | 50,413 mi |
| 2018 | 95% | 2,387 | 59,736 mi |
| 2017 | 95% | 1,392 | 72,207 mi |
| 2016 | 94% | 1,876 | 80,025 mi |
| 2015 | 93% | 2,300 | 85,475 mi |
| 2014 | 94% | 1,889 | 98,201 mi |
| 2013 | 91% | 1,562 | 108,280 mi |
| 2012 | 92% | 1,468 | 113,405 mi |
| 2011 | 93% | 1,392 | 120,960 mi |
| 2010 | 87% | 933 | 124,272 mi |
| 2009 | 89% | 735 | 138,957 mi |
| 2008 | 87% | 1,332 | 140,305 mi |
| 2007 | 86% | 1,124 | 147,303 mi |
| 2006 | 85% | 748 | 146,966 mi |
| 2005 | 87% | 661 | 142,434 mi |
| 2004 | 80% | 349 | 134,086 mi |
| 2003 | 84% | 223 | 134,224 mi |
| 2002 | 84% | 166 | 137,356 mi |
| 2001 | 85% | 157 | 141,044 mi |
| 2000 | 77% | 104 | 143,697 mi |
| 1999 | 80% | 192 | 140,354 mi |
| 1998 | 80% | 122 | 136,028 mi |
| 1997 | 79% | 115 | 131,393 mi |
| 1996 | 74% | 31 | 135,336 mi |
Checking a specific AUDI A8?
Enter the reg plate to see its individual MOT history, mileage verification, and predicted costs.
About the 1999 AUDI A8
The 1999 AUDI A8 is a premium performance with a 2771cc petrol engine. 192 of these vehicles were MOT tested in 2024, making it a rare model on UK roads. Among all cars from 1999, the average MOT pass rate is 75%, and this model beats that benchmark.
With an average of 140,354 miles at 25 years old, AUDI A8 owners tend to use this car less than the typical driver.
1999 AUDI A8 Fuel Costs
The 2771cc petrol engine is on the larger side, so fuel won't be this car's strong point. Expect around 30 mpg in mixed driving, which works out to roughly £1,592 per year at current petrol prices of 142p per litre (based on 7,400 miles per year).
What does it cost to own a 1999 AUDI A8?
Total estimated annual running cost is £2,247 (£187/month), broken down as £1592 fuel, £250 road tax, £55 MOT, and £350 predicted repairs. Repair costs are moderate, reflecting the 80% pass rate. Keeping on top of servicing will help avoid surprises.
AUDI A8 Reliability Trend
Newer AUDI A8s show better MOT pass rates than older ones, with an average improvement of 10 percentage points.
Buying a Used 1999 AUDI A8
At 25 years old, the AUDI A8 is firmly in budget territory. Purchase prices are low, but check for rust, worn suspension bushes, and electrical gremlins. A full service history is especially valuable at this age. If you're flexible on year, the 2021 model has the highest pass rate at 98%.
Alternatives to the 1999 AUDI A8
If reliability is your priority, there's one similar car with a higher MOT pass rate. Here are comparable petrol cars with similar engines:
- BMW 3 SERIES (2001) 77% pass rate (-3%) from 9,406 tests
- BMW Z3 (1999) 78% pass rate (-2%) from 8,191 tests
- MERCEDES SLK (1999) 79% pass rate (-1%) from 4,295 tests
- PORSCHE BOXSTER (2001) 83% pass rate (+3%) from 4,134 tests