Comparison BMW Z4 (E89, facelift 2013) 20i (184 Hp) sDrive & BMW 6 Series Gran Turismo (G32) 630i (258 Hp) Steptronic & BMW 7 Series (F01) 730d (245 Hp) Steptronic DPF & BMW 7 Series L (E38) 740iL (286 Hp) Steptronic
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| Brand: | BMW | BMW | BMW | BMW |
| Model: | Z4 | 6 Series | 7 Series | 7 Series |
| Generation: | Z4 (E89, facelift 2013) | 6 Series Gran Turismo (G32) | 7 Series (F01) | 7 Series L (E38) |
| Engine / modification: | 20i (184 Hp) sDrive | 630i (258 Hp) Steptronic | 730d (245 Hp) Steptronic DPF | 740iL (286 Hp) Steptronic |
| Production start: | 2013 year | 2017 year | 2008 year | 1996 year |
| Production end: | 2016 year | 2020 year | 2011 year | 1998 year |
| Coupe type: | Cabriolet | Sedan | Sedan | |
| Num. of Doors: | 2 | 5 | 4 | 4 |
| Num. of seats: | 2 | 5 | 5 | 5 |
| Fuel consumption / economy - urban: | 8.9 l/100 km | 7.8-8.2 l/100 km | 9.5 l/100 km | 19.5 l/100 km |
| Fuel consumption / economy - extra urban: | 5.6 l/100 km | 5.3-5.8 l/100 km | 5.9 l/100 km | 9.3 l/100 km |
| Fuel consumption / economy - combined: | 6.8 l/100 km | 6.2-6.6 l/100 km | 7.2 l/100 km | 13.0 l/100 km |
| Fuel Type: | Petrol (Gasoline) | Petrol (Gasoline) | Diesel | Petrol (Gasoline) |
| Drag coefficient: | 0.34 | 0.26 | 0.30 | |
| Fuel tank volume: | 55 l | 68 l | 80 l | 95 l |
| Emission standard: | Euro 6 | Euro 6 | Euro 5 | |
| CO2 emissions: | 159 g/km | 142-152 g/km | ||
| Power: | 184 hp | 258 hp | 245 hp | 286 hp |
| Max power in: | 5000 rpm. | 5000-6500 rpm. | 4000 rpm. | 5700 rpm. |
| Maximum speed: | 235 km/h | 250 km/h | 245 km/h | 250 km/h |
| Acceleration from 0 to 100 km/h: | 6.9 sec | 6.3 sec | 7.2 sec | 7.0 sec |
| Torque: | 270 Nm @ 1250-4500 rpm. | 400 Nm @ 1550-4400 rpm. | 540 Nm @ 2000 rpm. | 420 Nm @ 3900 rpm. |
| Model Engine: | N20B20 | B48B20 | N57D30 | |
| Engine position: | Front, longitudinal | Front, longitudinal | Front, longitudinal | Front, longitudinal |
| Engine displacement: | 1997 cm3 | 1998 cm3 | 2993 cm3 | 4398 cm3 |
| Engine oil capacity: | 4.75 l | 5.25 l | 6.5 l | 7.5 l |
| Coolant: | 8.2 l | 8.9 l | 12.0 l | |
| Fuel System: | Direct injection | Direct injection | Diesel Commonrail | Multi-point injection |
| Aspiration / Turbine: | Twin-power turbo | Twin-power turbo | Turbocharger | |
| Position of cylinders: | Inline | Inline | Inline | V engine |
| Valvetrain: | DOHC | DOHC | ||
| Number of cylinders: | 4 | 4 | 6 | 8 |
| Number of valves per cylinder: | 4 | 4 | 4 | 4 |
| Compression ratio: | 10 | 10.2 | 17 | 10 |
| Piston Stroke: | 90.1 mm | 94.6 mm | 90 mm | 82.7 mm |
| Cylinder Bore: | 84 mm | 82 mm | 84 mm | 92 mm |
| Wheel Drive: | Rear wheel drive | Rear wheel drive | Rear wheel drive | Rear wheel drive |
| Number of Gears (automatic transmission): | 8 Steptronic | 6 | 5 Steptronic | |
| Number of Gears (manual transmission): | 6 | 6 | ||
| Length: | 4239 mm | 5091 mm | 5072 mm | 5124 mm |
| Width: | 1790 mm | 1902 mm | 1902 mm | 1862 mm |
| Width including mirrors: | 2158 mm | |||
| Height: | 1291 mm | 1538 mm | 1479 mm | 1425 mm |
| Wheelbase: | 2496 mm | 3070 mm | 3070 mm | 3070 mm |
| Front track: | 1511 mm | 1615 mm | 1611 mm | 1552 mm |
| Rear (Back) track: | 1559 mm | 1649 mm | 1650 mm | 1568 mm |
| Ride height(clearance): | 130 mm | 138 mm | ||
| Front overhang: | 871 mm | |||
| Rear overhang: | 1150 mm | |||
| Minimum volume of Luggage (trunk): | 180 l | 610 l | 500 l | 500 l |
| Maximum amount of Luggage (trunk): | 310 l | 1800 l | ||
| Front suspension: | Double wishbone | Double wishbone | Double wishbone | Wishbone |
| Rear suspension: | Multi-link independent | Multi-link independent | Independent, spring multi-link with stabilizer | Inclined Lever |
| Max weight: | 1725 kg | 2380 kg | 2505 kg | 2410 kg |
| Front brakes: | Ventilated discs | Ventilated discs | Ventilated discs | Ventilated discs |
| Rear brakes: | Ventilated discs | Ventilated discs | Ventilated discs | Disc |
| Kerb Weight: | 1395 kg | 1720 kg | 1865 kg | 1875 kg |
| ABS: | yes | yes | yes | yes |
| Steering type: | Steering rack and pinion | Steering rack and pinion | Steering rack and pinion | Steering rack and pinion |
| Power steering: | Electric Steering | Electric Steering | Hydraulic Steering | Hydraulic Steering |
| Max. roof load: | 75 kg | |||
| Minimum turning circle (turning diameter): | 10.7 m | 12.3 m | 12.2 m | 12.2 m |
| Permitted trailer load with brakes (12%): | 2100 kg | |||
| Permitted trailer load without brakes: | 750 kg | |||
| Permitted towbar download: | 100 kg | |||
| Tire size: | 225/45 R17 | 225/60 R17; 245/50 R18; 245/45 R19; 275/40 R19; 245/40 R20; 275/35 R20 | 245/55 R17 102W RSC | 235/60 R16 |
| Wheel rims size: | 8J x 17 | 7.5J x 17; 8J x 18; 8.5J x 19; 9.5J x 19; 8.5J x 20; 10J x 20 | 8J x 17EH2+IS30 | R16 |