AUDI A5 (2018)
Running costs, common problems, and reliability data based on 25,771 real MOT tests in 2024.
MOT Pass Rate
90%
Total Tests (2024)
25,771
Avg Mileage
52,385 mi
Est. Annual Cost
£1,690
Is the 2018 AUDI A5 reliable?
Excellent reliability. Very few MOT failures. That's 8 points above the national average of 82%.
At 6 years old, 90% of AUDI A5s from 2018 passed their MOT first time in 2024. That's based on 25,771 tests across the UK. The average mileage at this age is 52,385 miles.
How does the 2018 AUDI A5 compare?
Mileage Analysis
The average 2018 AUDI A5 has 52,385 miles on the clock, which is in line with the expected 44,400 miles for a 6-year-old car, suggesting normal everyday use.
Best year to buy a AUDI A5?
The most reliable year is the 2021 model with a 92% MOT pass rate, while the 2007 model has the lowest at 82%. The 2018 sits between the two at 90%.
How much does a 2018 AUDI A5 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 A5 by Year
| Year | Pass Rate | Tests | Avg Mileage |
|---|---|---|---|
| 2021 | 92% | 768 | 29,053 mi |
| 2020 | 91% | 5,513 | 35,048 mi |
| 2019 | 90% | 22,290 | 43,034 mi |
| 2018 | 90% | 25,771 | 52,385 mi |
| 2017 | 89% | 33,531 | 63,247 mi |
| 2016 | 88% | 17,690 | 73,631 mi |
| 2015 | 87% | 22,720 | 82,750 mi |
| 2014 | 86% | 23,251 | 92,783 mi |
| 2013 | 85% | 23,409 | 98,721 mi |
| 2012 | 85% | 20,845 | 106,193 mi |
| 2011 | 83% | 21,339 | 112,687 mi |
| 2010 | 82% | 22,181 | 119,440 mi |
| 2009 | 82% | 13,400 | 125,967 mi |
| 2008 | 83% | 8,932 | 132,636 mi |
| 2007 | 82% | 3,222 | 141,630 mi |
Checking a specific AUDI A5?
Enter the reg plate to see its individual MOT history, mileage verification, and predicted costs.
About the 2018 AUDI A5
The 2018 AUDI A5 is a premium performance with a 2967cc diesel engine. 25,771 of these vehicles were MOT tested in 2024, making it one of the most commonly tested cars on UK roads. Among all cars from 2018, the average MOT pass rate is 89%, and this model beats that benchmark.
With an average of 52,385 miles at 6 years old, AUDI A5 owners drive about as much as the UK average.
2018 AUDI A5 Fuel Costs
The 2967cc diesel engine is on the larger side, so fuel won't be this car's strong point. Expect around 40 mpg in mixed driving, which works out to roughly £1,245 per year at current diesel prices of 148p per litre (based on 7,400 miles per year). Diesel cars of this age should have their DPF (diesel particulate filter) checked, as replacements can be costly.
What does it cost to own a 2018 AUDI A5?
Total estimated annual running cost is £1,690 (£141/month), broken down as £1245 fuel, £190 road tax, £55 MOT, and £200 predicted repairs. The low repair estimate reflects the excellent 90% pass rate. These cars rarely fail their MOT, so unexpected bills are less likely.
AUDI A5 Reliability Trend
Newer AUDI A5s show better MOT pass rates than older ones, with an average improvement of 6 percentage points.
Buying a Used 2018 AUDI A5
At 6 years old, the AUDI A5 offers good value with plenty of life remaining. Most manufacturer warranties will have expired, so a pre-purchase inspection is worth the cost. If you're flexible on year, the 2021 model has the highest pass rate at 92%. With 25,771 MOT tests in our data, there's strong statistical confidence in these figures.
Alternatives to the 2018 AUDI A5
If reliability is your priority, there are 2 similar cars with a higher MOT pass rate. Here are comparable diesel cars with similar engines:
- MERCEDES E (2019) 90% pass rate (same) from 41,000 tests
- MERCEDES GLC (2018) 91% pass rate (+1%) from 40,494 tests
- FORD RANGER (2019) 87% pass rate (-3%) from 32,194 tests
- LAND ROVER RANGE ROVER VELAR (2018) 91% pass rate (+1%) from 29,640 tests