Head to head · Coupe
Audi A5 vs BMW 4 Series
On value retention, reliability, fuel economy and insurance, the Audi A5 and BMW 4 Series finish level — the right pick comes down to which measures matter most to you.
| Measure | Audi A5 | BMW 4 Series |
|---|---|---|
| Est. value, ~3 years old | £23,900 (2023, 30,500 mi) | £28,500 (2023, 28,000 mi) |
| Value kept after 3 years | 64% | 64% |
| Reliability (MOT-derived, /100) | 76 | 81 · wins |
| Average mpg | 43 · wins | 38 |
| Insurance group | 48 | 48 |
| Road tax / year | £195 | £195 |
| Typical annual service | £290 | £290 |
Valuations are each model's ~3-year-old example at typical mileage, through the same model behind the profiles. Adjust mileage, trim and condition in the interactive comparison →
A5 vs 4 Series — quick answers
Which is more reliable, the A5 or the 4 Series?
The BMW 4 Series scores higher on Forecourt's MOT-derived reliability measure — 81 against the Audi A5's 76 out of 100.
How much does a used A5 cost compared with a 4 Series?
A roughly three-year-old Audi A5 is worth about £23,900 at typical mileage, against about £28,500 for the equivalent BMW 4 Series.