Head to head · Sports
Porsche 911 vs Mercedes-Benz AMG GT
On value retention, reliability, fuel economy and insurance, the Porsche 911 and Mercedes-Benz AMG GT finish level — the right pick comes down to which measures matter most to you.
| Measure | Porsche 911 | Mercedes-Benz AMG GT |
|---|---|---|
| Est. value, ~3 years old | £70,450 (2023, 15,000 mi) | £91,900 (2023, 23,500 mi) |
| Value kept after 3 years | 70% | 70% |
| Reliability (MOT-derived, /100) | 78 · wins | 70 |
| Average mpg | 26 | 30 · wins |
| 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 →
911 vs AMG GT — quick answers
Which is more reliable, the 911 or the AMG GT?
The Porsche 911 scores higher on Forecourt's MOT-derived reliability measure — 78 against the Mercedes-Benz AMG GT's 70 out of 100.
How much does a used 911 cost compared with a AMG GT?
A roughly three-year-old Porsche 911 is worth about £70,450 at typical mileage, against about £91,900 for the equivalent Mercedes-Benz AMG GT.