Comparison Mercedes-Benz AMG GT Roadster (R190) 4.0 V8 (476 Hp) DCT & GMC Sierra 2500HD V (GMTT1XX, facelift 2024) Crew Cab Standard Bed 6.6 V8 (401 Hp) Automatic
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| Brand: | Mercedes-Benz | GMC |
| Model: | AMG GT | Sierra 2500HD |
| Generation: | AMG GT Roadster (R190) | Sierra 2500HD V (GMTT1XX, facelift 2024) Crew Cab Standard Bed |
| Engine / modification: | 4.0 V8 (476 Hp) DCT | 6.6 V8 (401 Hp) Automatic |
| Production start: | 2017 year | 2023 year |
| Coupe type: | Roadster | Pick-up |
| Powertrain Architecture: | Internal Combustion engine | |
| Num. of Doors: | 2 | 4 |
| Num. of seats: | 2 | 5 |
| Fuel consumption / economy - urban: | 12.2 l/100 km | |
| Fuel consumption / economy - extra urban: | 7.8 l/100 km | |
| Fuel consumption / economy - combined: | 9.4 l/100 km | |
| Fuel consumption at Low speed (WLTP): | 12.1 l/100 km | |
| Fuel Type: | Petrol (Gasoline) | Petrol (Gasoline) |
| Drag coefficient: | 0.38 | |
| Fuel tank volume: | 65 l | 136 l |
| Fuel consumption at very high speed (WLTP): | 12.3 l/100 km | |
| Emission standard: | Euro 6 | |
| CO2 emissions: | 219 g/km | |
| Power: | 476 hp | 401 hp |
| Max power in: | 6000 rpm. | 5200 rpm. |
| Maximum speed: | 302 km/h | |
| Acceleration from 0 to 100 km/h: | 4.0 sec | |
| CO2 emissions (WLTP): | 274-279 g/km | |
| Torque: | 630 Nm @ 1700-5000 rpm. | 629 Nm @ 4000 rpm. |
| Model Engine: | L8T | |
| Engine position: | Front, longitudinal | |
| Engine displacement: | 3982 cm3 | |
| Engine oil capacity: | 7.6 l | |
| Coolant: | 14.6 l | |
| Fuel System: | Direct injection | |
| Aspiration / Turbine: | BiTurbo | Naturally aspirated engine |
| Position of cylinders: | V engine | |
| Valvetrain: | OHV | |
| Number of cylinders: | 8 | 8 |
| Number of valves per cylinder: | 4 | 2 |
| Compression ratio: | 10.5 | 10.8 |
| Piston Stroke: | 98 mm | |
| Cylinder Bore: | 103.25 mm | |
| Wheel Drive: | Rear wheel drive | Rear wheel drive |
| Number of Gears (automatic transmission): | 7 DCT | |
| Length: | 4544 mm | 6369 mm |
| Width: | 1939 mm | |
| Width including mirrors: | 2075 mm | 2079 mm |
| Height: | 1259 mm | 2027 mm |
| Wheelbase: | 2630 mm | 4037 mm |
| Front track: | 1684 mm | 1731 mm |
| Rear (Back) track: | 1651 mm | 1736 mm |
| Ride height(clearance): | 257 mm | |
| Climb angle: | 4.0 ° | |
| Front overhang: | 898 mm | |
| Rear overhang: | 1016 mm | |
| Minimum volume of Luggage (trunk): | 165 l | |
| Front suspension: | Double wishbone | Independent torsion bar, double wishbone |
| Rear suspension: | Double wishbone | |
| Max weight: | 1940 kg | 4604 kg |
| Front brakes: | Ventilated discs | |
| Rear brakes: | Ventilated discs | |
| Kerb Weight: | 1595 kg | 3032 kg |
| ABS: | yes | |
| Steering type: | Steering rack and pinion | Cone worm with recirculation balls |
| Power steering: | Electric Steering | Hydraulic Steering |
| Minimum turning circle (turning diameter): | 11.50 m | |
| Permitted trailer load with brakes (12%): | 7257 kg | |
| Tire size: | 255/35 ZR19; 295/35 ZR19 | 245/75 R17; 265/70 R17; 275/70 R18; 275/65 R20 |
| Wheel rims size: | R19 | 7.5J x 17; 8J x 18; 8.5J x 20 |