Comparison BMW Z4 (G29) 20i (197 Hp) sDrive Steptronic & Mercedes-Benz W128 Cabriolet 220 SE (120 Hp)
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| Brand: | BMW | Mercedes-Benz |
| Model: | Z4 | Ponton |
| Generation: | Z4 (G29) | W128 Cabriolet |
| Engine / modification: | 20i (197 Hp) sDrive Steptronic | 220 SE (120 Hp) |
| Production start: | 2018 year | 1959 year |
| Production end: | 1960 year | |
| Coupe type: | Cabriolet | Cabriolet |
| Num. of Doors: | 2 | 2 |
| Num. of seats: | 2 | 5 |
| Fuel consumption / economy - urban: | 7.3-7.4 l/100 km | |
| Fuel consumption / economy - extra urban: | 5.0-5.4 l/100 km | |
| Fuel consumption / economy - combined: | 6.0-6.1 l/100 km | 10.7 l/100 km |
| Fuel Type: | Petrol (Gasoline) | Petrol (Gasoline) |
| Drag coefficient: | 0.29 | |
| Fuel tank volume: | 52 l | 62 l |
| Emission standard: | Euro 6 d | |
| CO2 emissions: | 137-139 g/km | |
| Power: | 197 hp | 120 hp |
| Max power in: | 4500-6500 rpm. | 4800 rpm. |
| Maximum speed: | 226 km/h | 165 km/h |
| Acceleration from 0 to 100 km/h: | 6.6 sec | 15 sec |
| Torque: | 320 Nm @ 1450-4200 rpm. | 189 Nm @ 3900 rpm. |
| Model Engine: | B48B20 | M 127 III / 127.983 |
| Engine position: | Front, longitudinal | Front, longitudinal |
| Engine displacement: | 1998 cm3 | 2195 cm3 |
| Engine oil capacity: | 5.25 l | |
| Fuel System: | Direct injection | |
| Aspiration / Turbine: | Twin-power turbo | |
| Position of cylinders: | Inline | Inline |
| Valvetrain: | SOHC | |
| Number of cylinders: | 4 | 6 |
| Number of valves per cylinder: | 4 | 2 |
| Compression ratio: | 10.2 | 8.7 |
| Piston Stroke: | 94.6 mm | 72.8 mm |
| Cylinder Bore: | 82 mm | 80.01 mm |
| Wheel Drive: | Rear wheel drive | Rear wheel drive |
| Number of Gears (automatic transmission): | 8 Steptronic | |
| Number of Gears (manual transmission): | 4 | |
| Length: | 4324 mm | 4700 mm |
| Width: | 1864 mm | 1790 mm |
| Width including mirrors: | 2024 mm | |
| Height: | 1304 mm | 1530 mm |
| Wheelbase: | 2470 mm | 2700 mm |
| Front track: | 1609 mm | 1430 mm |
| Rear (Back) track: | 1616 mm | 1470 mm |
| Ride height(clearance): | 117 mm | |
| Front overhang: | 907 mm | |
| Rear overhang: | 947 mm | |
| Minimum volume of Luggage (trunk): | 281 l | |
| Front suspension: | Double wishbone | |
| Rear suspension: | Multi-link independent | |
| Max weight: | 1740 kg | 1810 kg |
| Front brakes: | Ventilated discs | Drum |
| Rear brakes: | Ventilated discs | Drum |
| Kerb Weight: | 1420 kg | 1410 kg |
| ABS: | yes | |
| Steering type: | Steering rack and pinion | Cone worm with recirculation balls |
| Power steering: | Electric Steering | |
| Minimum turning circle (turning diameter): | 11.0 m | |
| Tire size: | Front wheel tires: 225/50 R17 | |
| Wheel rims size: | Front wheel rims: 7.5J x 17 |