Comparison BMW Z4 (E89) 23i (204 Hp) sDrive & BMW 7 Series L (E38) 728iL (193 Hp) Steptronic
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| Brand: | BMW | BMW |
| Model: | Z4 | 7 Series |
| Generation: | Z4 (E89) | 7 Series L (E38) |
| Engine / modification: | 23i (204 Hp) sDrive | 728iL (193 Hp) Steptronic |
| Production start: | 2009 year | 1995 year |
| Production end: | 2011 year | 1998 year |
| Coupe type: | Cabriolet | Sedan |
| Num. of Doors: | 2 | 4 |
| Num. of seats: | 2 | 5 |
| Fuel consumption / economy - urban: | 12.4 l/100 km | 16 l/100 km |
| Fuel consumption / economy - extra urban: | 6.2 l/100 km | 8.3 l/100 km |
| Fuel consumption / economy - combined: | 8.5 l/100 km | 11.1 l/100 km |
| Fuel Type: | Petrol (Gasoline) | Petrol (Gasoline) |
| Drag coefficient: | 0.30 | |
| Fuel tank volume: | 55 l | 85 l |
| Emission standard: | Euro 4 | |
| Power: | 204 hp | 193 hp |
| Max power in: | 6400 rpm. | 5300 rpm. |
| Maximum speed: | 242 km/h | 225 km/h |
| Acceleration from 0 to 100 km/h: | 6.6 sec | 9.6 sec |
| Torque: | 250 Nm @ 2750 rpm. | 280 Nm @ 3950 rpm. |
| Model Engine: | N52B25 | |
| Engine position: | Front, longitudinal | Front, longitudinal |
| Engine displacement: | 2497 cm3 | 2793 cm3 |
| Engine oil capacity: | 7 l | 6.5 l |
| Coolant: | 8.2 l | 10.5 l |
| Fuel System: | Multi-point injection | Multi-point injection |
| Position of cylinders: | Inline | Inline |
| Valvetrain: | DOHC | DOHC |
| Number of cylinders: | 6 | 6 |
| Number of valves per cylinder: | 4 | 4 |
| Compression ratio: | 11 | 10.2 |
| Piston Stroke: | 78.8 mm | 84 mm |
| Cylinder Bore: | 82 mm | 84 mm |
| Wheel Drive: | Rear wheel drive | Rear wheel drive |
| Number of Gears (automatic transmission): | 5 Steptronic | |
| Number of Gears (manual transmission): | 6 | |
| Length: | 4239 mm | 5124 mm |
| Width: | 1790 mm | 1862 mm |
| Height: | 1291 mm | 1425 mm |
| Wheelbase: | 2496 mm | 3070 mm |
| Front track: | 1511 mm | 1552 mm |
| Rear (Back) track: | 1537 mm | 1568 mm |
| Minimum volume of Luggage (trunk): | 180 l | 500 l |
| Maximum amount of Luggage (trunk): | 310 l | |
| Front suspension: | The depreciated rack | Wishbone |
| Rear suspension: | Helical spring | Inclined Lever |
| Max weight: | 1735 kg | 2260 kg |
| Front brakes: | Ventilated discs | Ventilated discs |
| Rear brakes: | Ventilated discs | Disc |
| Kerb Weight: | 1480 kg | 1725 kg |
| ABS: | yes | yes |
| Steering type: | Steering rack and pinion | Steering rack and pinion |
| Power steering: | Electric Steering | Hydraulic Steering |
| Minimum turning circle (turning diameter): | 9.8 m | 12.2 m |
| Tire size: | 225/45 R17 | 215/65 R16 |
| Wheel rims size: | 8J x 17 | R16 |