Comparison BMW 7 Series (E32) 730i (197 Hp) & BMW Z4 (G29) M40i (340 Hp) Steptronic & Infiniti QX30 2.2d (170 Hp) AWD DCT
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| Brand: | BMW | BMW | Infiniti |
| Model: | 7 Series | Z4 | QX30 |
| Generation: | 7 Series (E32) | Z4 (G29) | QX30 |
| Engine / modification: | 730i (197 Hp) | M40i (340 Hp) Steptronic | 2.2d (170 Hp) AWD DCT |
| Production start: | 1986 year | 2018 year | 2016 year |
| Production end: | 1992 year | ||
| Coupe type: | Sedan | Cabriolet | SUV |
| Num. of Doors: | 4 | 2 | 5 |
| Num. of seats: | 5 | 2 | 5 |
| Fuel consumption / economy - urban: | 15.5 l/100 km | 9.2 l/100 km | 6.0 l/100 km |
| Fuel consumption / economy - extra urban: | 7.6 l/100 km | 5.9-6.3 l/100 km | 4.3 l/100 km |
| Fuel consumption / economy - combined: | 10.8 l/100 km | 7.1-7.4 l/100 km | 4.9 l/100 km |
| Fuel Type: | Petrol (Gasoline) | Petrol (Gasoline) | Diesel |
| Drag coefficient: | 0.32 | 0.31 | 0.33 |
| Fuel tank volume: | 90 l | 52 l | 56 l |
| Emission standard: | Euro 6 d | EURO VI | |
| CO2 emissions: | 162-168 g/km | 128 g/km | |
| Power: | 197 hp | 340 hp | 170 hp |
| Max power in: | 5800 rpm. | 5000-6500 rpm. | 3400-4000 rpm. |
| Maximum speed: | 225 km/h | 250 km/h | 215 km/h |
| Acceleration from 0 to 100 km/h: | 8.9 sec | 4.5 sec | 8.5 sec |
| Torque: | 275 Nm @ 4000 rpm. | 500 Nm @ 1600-4500 rpm. | 350 Nm/1400-3400 rpm. |
| Model Engine: | M30B30 | B58B30 | |
| Engine position: | Front, longitudinal | Front, longitudinal | Front, transverse |
| Engine displacement: | 2986 cm3 | 2998 cm3 | 2143 cm3 |
| Engine oil capacity: | 5.75 l | 6.5 l | |
| Coolant: | 12 l | ||
| Fuel System: | Multi-point injection | Direct injection | Diesel Commonrail |
| Aspiration / Turbine: | Twin-power turbo | Turbo / Intercooler (Turbocharging / Intercooler) | |
| Position of cylinders: | Inline | Inline | Inline |
| Number of cylinders: | 6 | 6 | 4 |
| Number of valves per cylinder: | 2 | 4 | 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) | All wheel drive (4x4) | |
| Number of Gears (automatic transmission): | 8 Steptronic | 7 DCT | |
| Number of Gears (manual transmission): | 5 | ||
| Length: | 4910 mm | 4324 mm | 4425 mm |
| Width: | 1845 mm | 1864 mm | 1815 mm |
| Width including mirrors: | 2024 mm | 2083 mm | |
| Height: | 1411 mm | 1304 mm | 1515 mm |
| Wheelbase: | 2832 mm | 2470 mm | 2700 mm |
| Front track: | 1527 mm | 1594 mm | 1572 mm |
| Rear (Back) track: | 1550 mm | 1589 mm | 1573 mm |
| Ride height(clearance): | 114 mm | 202 mm | |
| Front overhang: | 907 mm | ||
| Rear overhang: | 947 mm | ||
| Minimum volume of Luggage (trunk): | 500 l | 281 l | 430 l |
| Front suspension: | The depreciated rack | Double wishbone | Independent type McPherson |
| Rear suspension: | Helical spring | Multi-link independent | Multi-link independent |
| Max weight: | 2130 kg | 1860 kg | 2075 kg |
| Front brakes: | Ventilated discs | Ventilated discs | Ventilated discs |
| Rear brakes: | Disc | Ventilated discs | Disc |
| Kerb Weight: | 1600 kg | 1535 kg | 1535-1559 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): | 11.6 m | 11.0 m | 11.4 m |
| Permitted trailer load with brakes (12%): | 1800 kg | ||
| Permitted trailer load without brakes: | 750 kg | ||
| Tire size: | 205/65 R15 | 255/40 ZR18; 275/40 ZR18 | 235/50 R18 |
| Wheel rims size: | R15 | 9J x 18; 10J x 18 | R18 |