Comparison BMW 4 Series Gran Coupe (F36, facelift 2017) 420i (184 Hp) xDrive & Alfa Romeo Stelvio Quadrifoglio 2.9 Bi-Turbo V6 (510 Hp) AWD Automatic
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| Brand: | BMW | Alfa Romeo |
| Model: | 4 Series | Stelvio |
| Generation: | 4 Series Gran Coupe (F36, facelift 2017) | Stelvio |
| Engine / modification: | 420i (184 Hp) xDrive | Quadrifoglio 2.9 Bi-Turbo V6 (510 Hp) AWD Automatic |
| Production start: | 2017 year | 2017 year |
| Production end: | 2018 year | |
| Coupe type: | Coupe | |
| Num. of Doors: | 4 | 5 |
| Num. of seats: | 5 | 5 |
| Fuel consumption / economy - urban: | 8.7-9.0 l/100 km | 11.7 l/100 km |
| Fuel consumption / economy - extra urban: | 5.4-5.7 l/100 km | 7.5 l/100 km |
| Fuel consumption / economy - combined: | 6.6-6.9 l/100 km | 9.0 l/100 km |
| Fuel Type: | Petrol (Gasoline) | Petrol (Gasoline) |
| Drag coefficient: | 0.30 | |
| Fuel tank volume: | 60 l | 64 l |
| Emission standard: | Euro 6 | Euro 6 |
| CO2 emissions: | 154-161 g/km | 210 g/km |
| Power: | 184 hp | 510 hp |
| Max power in: | 5000 rpm. | 6500 rpm. |
| Maximum speed: | 233 km/h | 283 km/h |
| Acceleration from 0 to 100 km/h: | 7.8 sec | 3.8 sec |
| Torque: | 270 Nm @ 1350-4600 rpm. | 600 Nm @ 2500 rpm. |
| Model Engine: | B48B20 | |
| Engine position: | Front, longitudinal | Front, longitudinal |
| Engine displacement: | 1998 cm3 | 2891 cm3 |
| Engine oil capacity: | 5.25 l | 6.5 l |
| Coolant: | 11.2 l | |
| Fuel System: | Direct injection | Direct injection |
| Aspiration / Turbine: | Twin-power turbo | BiTurbo |
| Position of cylinders: | Inline | V engine |
| Number of cylinders: | 4 | 6 |
| Number of valves per cylinder: | 4 | 4 |
| Compression ratio: | 11 | 9.31 |
| Piston Stroke: | 94.6 mm | 82 mm |
| Cylinder Bore: | 82 mm | 86.5 mm |
| Wheel Drive: | All wheel drive (4x4) | All wheel drive (4x4) |
| Number of Gears (automatic transmission): | 8 | |
| Number of Gears (manual transmission): | 6 | |
| Length: | 4640 mm | 4702 mm |
| Width: | 1825 mm | |
| Width including mirrors: | 2163 mm | |
| Height: | 1404 mm | 1681 mm |
| Wheelbase: | 2810 mm | 2818 mm |
| Front track: | 1543 mm | 1622 mm |
| Rear (Back) track: | 1592 mm | 1675 mm |
| Ride height(clearance): | 145 mm | |
| Minimum volume of Luggage (trunk): | 480 l | |
| Maximum amount of Luggage (trunk): | 1300 l | |
| Front suspension: | Independent, spring | Double wishbone |
| Rear suspension: | Multi-link independent | Independent, spring multi-link with stabilizer |
| Max weight: | 2160 kg | |
| Front brakes: | Ventilated discs | Ventilated discs |
| Rear brakes: | Ventilated discs | Ventilated discs |
| Kerb Weight: | 1600 kg | 1830 kg |
| ABS: | yes | yes |
| Steering type: | Steering rack and pinion | Steering rack and pinion |
| Power steering: | Electric Steering | Electric Steering |
| Max. roof load: | 75 kg | |
| Minimum turning circle (turning diameter): | 11.8 m | |
| Permitted trailer load with brakes (12%): | 1700 kg | |
| Permitted trailer load without brakes: | 750 kg | |
| Permitted towbar download: | 75 kg | |
| Tire size: | 225/50 R17; 225/45 R18; 255/40 R18; 225/40 R19; 255/35 R19 | |
| Wheel rims size: | 7.5J x 17; 8J x 18; 8.5J x 18; 8J x 19; 8.5J x 19 |