Comparison BMW 7 Series (E32) 730i (197 Hp) & BMW Z4 (G29) M40i (340 Hp) Steptronic
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| Brand: | BMW | BMW |
| Model: | 7 Series | Z4 |
| Generation: | 7 Series (E32) | Z4 (G29) |
| Engine / modification: | 730i (197 Hp) | M40i (340 Hp) Steptronic |
| Production start: | 1986 year | 2018 year |
| Production end: | 1992 year | |
| Coupe type: | Sedan | Cabriolet |
| Num. of Doors: | 4 | 2 |
| Num. of seats: | 5 | 2 |
| Fuel consumption / economy - urban: | 15.5 l/100 km | 9.2 l/100 km |
| Fuel consumption / economy - extra urban: | 7.6 l/100 km | 5.9-6.3 l/100 km |
| Fuel consumption / economy - combined: | 10.8 l/100 km | 7.1-7.4 l/100 km |
| Fuel Type: | Petrol (Gasoline) | Petrol (Gasoline) |
| Drag coefficient: | 0.32 | 0.31 |
| Fuel tank volume: | 90 l | 52 l |
| Emission standard: | Euro 6 d | |
| CO2 emissions: | 162-168 g/km | |
| Power: | 197 hp | 340 hp |
| Max power in: | 5800 rpm. | 5000-6500 rpm. |
| Maximum speed: | 225 km/h | 250 km/h |
| Acceleration from 0 to 100 km/h: | 8.9 sec | 4.5 sec |
| Torque: | 275 Nm @ 4000 rpm. | 500 Nm @ 1600-4500 rpm. |
| Model Engine: | M30B30 | B58B30 |
| Engine position: | Front, longitudinal | Front, longitudinal |
| Engine displacement: | 2986 cm3 | 2998 cm3 |
| Engine oil capacity: | 5.75 l | 6.5 l |
| Coolant: | 12 l | |
| Fuel System: | Multi-point injection | Direct injection |
| Aspiration / Turbine: | Twin-power turbo | |
| Position of cylinders: | Inline | Inline |
| Number of cylinders: | 6 | 6 |
| Number of valves per cylinder: | 2 | 4 |
| Compression ratio: | 9.2 | 11 |
| Piston Stroke: | 80 mm | 94.6 mm |
| Cylinder Bore: | 89 mm | 82 mm |
| Wheel Drive: | All wheel drive (4x4) | |
| Number of Gears (automatic transmission): | 8 Steptronic | |
| Number of Gears (manual transmission): | 5 | |
| Length: | 4910 mm | 4324 mm |
| Width: | 1845 mm | 1864 mm |
| Width including mirrors: | 2024 mm | |
| Height: | 1411 mm | 1304 mm |
| Wheelbase: | 2832 mm | 2470 mm |
| Front track: | 1527 mm | 1594 mm |
| Rear (Back) track: | 1550 mm | 1589 mm |
| Ride height(clearance): | 114 mm | |
| Front overhang: | 907 mm | |
| Rear overhang: | 947 mm | |
| Minimum volume of Luggage (trunk): | 500 l | 281 l |
| Front suspension: | The depreciated rack | Double wishbone |
| Rear suspension: | Helical spring | Multi-link independent |
| Max weight: | 2130 kg | 1860 kg |
| Front brakes: | Ventilated discs | Ventilated discs |
| Rear brakes: | Disc | Ventilated discs |
| Kerb Weight: | 1600 kg | 1535 kg |
| ABS: | yes | yes |
| Steering type: | Steering rack and pinion | Steering rack and pinion |
| Power steering: | Hydraulic Steering | Electric Steering |
| Minimum turning circle (turning diameter): | 11.6 m | 11.0 m |
| Tire size: | 205/65 R15 | 255/40 ZR18; 275/40 ZR18 |
| Wheel rims size: | R15 | 9J x 18; 10J x 18 |