Comparison BMW M3 Convertible (E30) 2.3 (195 Hp) & BMW Z4 (E89) 30i (258 Hp) sDrive & BMW M8 Convertible 4.4 V8 (600 Hp) xDrive Steptronic
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| Brand: | BMW | BMW | BMW |
| Model: | M3 | Z4 | M8 |
| Generation: | M3 Convertible (E30) | Z4 (E89) | M8 Convertible |
| Engine / modification: | 2.3 (195 Hp) | 30i (258 Hp) sDrive | 4.4 V8 (600 Hp) xDrive Steptronic |
| Production start: | 1988 year | 2009 year | 2019 year |
| Production end: | 1991 year | 2011 year | |
| Coupe type: | Cabriolet | Cabriolet | Cabriolet |
| Num. of Doors: | 2 | 2 | 2 |
| Num. of seats: | 4 | 2 | 4 |
| Fuel consumption / economy - urban: | 12.5 l/100 km | 12.4 l/100 km | 15.2 l/100 km |
| Fuel consumption / economy - extra urban: | 8.0 l/100 km | 6.2 l/100 km | 7.9-8.2 l/100 km |
| Fuel consumption / economy - combined: | 9.0 l/100 km | 8.5 l/100 km | 10.6-10.8 l/100 km |
| Fuel Type: | Petrol (Gasoline) | Petrol (Gasoline) | Petrol (Gasoline) |
| Drag coefficient: | 0.36 | ||
| Fuel tank volume: | 62 l | 55 l | 68 l |
| Emission standard: | Euro 5 | Euro 6 d-TEMP | |
| CO2 emissions: | 241-246 g/km | ||
| Power: | 195 hp | 258 hp | 600 hp |
| Max power in: | 6750 rpm. | 6600 rpm. | 6000 rpm. |
| Maximum speed: | 228 km/h | 250 km/h | 250 km/h |
| Acceleration from 0 to 100 km/h: | 7.5 sec | 5.8 sec | 3.4 sec |
| Acceleration from 0 to 200 km/h: | 11.3 sec | ||
| Torque: | 230 Nm @ 4750 rpm. | 315 Nm @ 2500 rpm. | 750 Nm @ 1800-5600 rpm. |
| Model Engine: | S14Z | N52B30 | S63B44 |
| Engine position: | Front, longitudinal | Front, longitudinal | Front, longitudinal |
| Engine displacement: | 2302 cm3 | 2996 cm3 | 4395 cm3 |
| Engine oil capacity: | 6.5 l | 10.0 l | |
| Coolant: | 8.2 l | ||
| Fuel System: | Multi-point injection | Multi-point injection | Direct injection |
| Aspiration / Turbine: | Twin-power turbo | ||
| Position of cylinders: | Inline | Inline | V engine |
| Valvetrain: | DOHC | ||
| Number of cylinders: | 4 | 6 | 8 |
| Number of valves per cylinder: | 4 | 4 | 4 |
| Compression ratio: | 10.5 | 10.7 | 10 |
| Piston Stroke: | 84 mm | 88 mm | 88.3 mm |
| Cylinder Bore: | 93.4 mm | 85 mm | 89 mm |
| Wheel Drive: | Rear wheel drive | All wheel drive (4x4) | |
| Number of Gears (automatic transmission): | 8 M Steptronic | ||
| Number of Gears (manual transmission): | 5 | 6 | |
| Length: | 4345 mm | 4239 mm | 4867 mm |
| Width: | 1680 mm | 1790 mm | 1907 mm |
| Width including mirrors: | 2137 mm | ||
| Height: | 1370 mm | 1291 mm | 1353 mm |
| Wheelbase: | 2565 mm | 2496 mm | 2827 mm |
| Front track: | 1414 mm | 1511 mm | 1627 mm |
| Rear (Back) track: | 1435 mm | 1537 mm | 1632 mm |
| Front overhang: | 950 mm | ||
| Rear overhang: | 1090 mm | ||
| Minimum volume of Luggage (trunk): | 303 l | 180 l | |
| Maximum amount of Luggage (trunk): | 310 l | 350 l | |
| Front suspension: | The depreciated rack | Double wishbone | |
| Rear suspension: | Helical spring | Multi-link independent | |
| Max weight: | 1720 kg | 1745 kg | 2440 kg |
| Front brakes: | Ventilated discs | Ventilated discs | Ventilated discs |
| Rear brakes: | Disc | Ventilated discs | Ventilated discs |
| Kerb Weight: | 1360 kg | 1490 kg | 2010 kg |
| ABS: | yes | yes | yes |
| Steering type: | Steering rack and pinion | Steering rack and pinion | Steering rack and pinion |
| Power steering: | Hydraulic Steering | Electric Steering | Electric Steering |
| Minimum turning circle (turning diameter): | 11.1 m | 9.8 m | 12.2 m |
| Tire size: | 205/55 R15 | 225/45 R17 | Front wheel tires: 275/40 ZR19 105Y XL |
| Wheel rims size: | R15 | 8J x 17 | Front wheel rims: 9.5J x 19 |