Alpina B3 G20 (2020 – present) vs Mercedes-AMG GT 4-DOOR COUPE (2020 – 2023): specs compared
The Alpina B3 G20 is the more powerful of the two, with up to 462 hp against 435 hp. It is quicker, reaching 100 km/h in 3.8 s against 4.5 s. It has the higher top speed: 303 km/h against 285 km/h. The Mercedes-AMG GT 4-DOOR COUPE uses less fuel, from 8.7 L/100 km against 9.8 L/100 km.
| Specification |
Alpina
B3 G20
2020 – present
|
Mercedes-AMG
GT 4-DOOR COUPE
2020 – 2023
|
|---|---|---|
| Overview | ||
| Origin | Germany | Germany |
| Documented years | 2020 – present | 2020 – 2023 |
| Body style | Sedan | 4 Doors · Sedan |
| Variants | 1 | 1 |
| Fuel | Petrol | Hybrid |
| Drive | AWD | AWD |
| Gearbox | Automatic | Automatic |
| Performance | ||
| Power | 462 hp | 435 hp |
| Torque | 700 Nm | 520 Nm |
| 0–100 km/h | 3.8 s | 4.5 s |
| Top speed | 303 km/h | 285 km/h |
| Economy | ||
| Fuel economy | 9.8 L/100 km | 8.7 L/100 km |
| Dimensions | ||
| Length | 4,719 mm | — |
| Width | 1,827 mm | — |
| Height | 1,440 mm | — |
| Wheelbase | 2,851 mm | — |
| Curb weight | 1,785 kg | — |
Ranges cover all variants of each car. The highlight marks the best version per row.

