The current Mercedes-Benz AMG GT 4-Door is 5,092 mm long, 1,958 mm wide and 1,420 mm tall, on a 3,040 mm wheelbase. It has grown 4 cm longer since the 2018 AMG GT 4-Door.
| Years | Length | Width | Height | Wheelbase | Boot capacity | Turning circle |
|---|---|---|---|---|---|---|
| 2018–2026 | 5,054 | 1,939 | 1,443 | 2,951 | 408 | 11.0 |
| 2026–presentCurrent | 5,092 | 1,958 | 1,420 | 3,040 | 415 | 12.0 |
Exterior figures are manufacturer specifications for the AMG GT 4-Door, averaged per generation across its variants and shown for the most common body style. Generations with the same size are merged. Boot capacity is the seats-up figure where the manufacturer quotes one.