Head to head · Estate
Audi RS6 Avant vs Audi A6 Avant
On the measures that matter most to a used buyer — value retention, reliability, fuel economy and insurance — the Audi RS6 Avant comes out ahead of the Audi A6 Avant, winning 1 of the 1 categories where the two differ.
| Measure | Audi RS6 Avant | Audi A6 Avant |
|---|---|---|
| Est. value, ~3 years old | £62,700 (2023, 25,500 mi) | £29,900 (2023, 28,500 mi) |
| Value kept after 3 years | 60% | 60% |
| Reliability (MOT-derived, /100) | 74 · wins | 70 |
| Average mpg | 47 | 47 |
| Insurance group | 30 | 30 |
| 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 →
RS6 Avant vs A6 Avant — quick answers
Which is more reliable, the RS6 Avant or the A6 Avant?
The Audi RS6 Avant scores higher on Forecourt's MOT-derived reliability measure — 74 against the Audi A6 Avant's 70 out of 100.
How much does a used RS6 Avant cost compared with a A6 Avant?
A roughly three-year-old Audi RS6 Avant is worth about £62,700 at typical mileage, against about £29,900 for the equivalent Audi A6 Avant.