Comparison BMW Z4 (E89, facelift 2013) 28i (245 Hp) sDrive Automatic & BMW 4 Series Convertible (G23) 430d (286 Hp) MHEV Steptronic
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| Brand: | BMW | BMW |
| Model: | Z4 | 4 Series |
| Generation: | Z4 (E89, facelift 2013) | 4 Series Convertible (G23) |
| Engine / modification: | 28i (245 Hp) sDrive Automatic | 430d (286 Hp) MHEV Steptronic |
| Production start: | 2013 year | 2021 year |
| Production end: | 2016 year | |
| Coupe type: | Cabriolet | Cabriolet |
| Num. of Doors: | 2 | 2 |
| Num. of seats: | 2 | 4 |
| Fuel consumption / economy - urban: | 9.4 l/100 km | |
| Fuel consumption / economy - extra urban: | 5.3 l/100 km | |
| Fuel consumption / economy - combined: | 6.8 l/100 km | |
| Fuel Type: | Petrol (Gasoline) | Diesel |
| Drag coefficient: | 0.34 | 0.28 |
| Fuel tank volume: | 55 l | 59 l |
| Combined fuel consumption (WLTP): | 5.3-6 l/100 km | |
| Emission standard: | EURO VI | Euro 6d |
| CO2 emissions: | 159 g/km | |
| Power: | 245 hp | 286 hp |
| Max power in: | 5000-6500 rpm. | 4000 rpm. |
| Maximum speed: | 250 km/h | 250 , Electronically limited km/h |
| Acceleration from 0 to 100 km/h: | 5.5 sec | 5.8 sec |
| CO2 emissions (WLTP): | 139-156 g/km | |
| Torque: | 350 Nm @ 1250-4800 rpm. | 650 Nm @ 1500-2500 rpm. |
| Model Engine: | B57D30B | |
| Engine position: | Front, longitudinal | Front, longitudinal |
| Engine displacement: | 1997 cm3 | 2993 cm3 |
| Engine oil capacity: | 5.75 l | 7 l |
| Coolant: | 8.5 l | |
| Fuel System: | Direct injection | Diesel Commonrail |
| Aspiration / Turbine: | Twin-power turbo | |
| Position of cylinders: | Inline | Inline |
| Valvetrain: | DOHC | |
| Number of cylinders: | 4 | 6 |
| Number of valves per cylinder: | 4 | 4 |
| Compression ratio: | 10 | 16.5 |
| Piston Stroke: | 90.1 mm | 90 mm |
| Cylinder Bore: | 84 mm | 84 mm |
| Electric motor power: | 11 | |
| Wheel Drive: | Rear wheel drive | Rear wheel drive |
| Number of Gears (automatic transmission): | 8 | 8 Steptronic |
| Length: | 4239 mm | 4768 mm |
| Width: | 1790 mm | 1852 mm |
| Height: | 1291 mm | 1384 mm |
| Wheelbase: | 2496 mm | 2851 mm |
| Front track: | 1511 mm | 1573 mm |
| Rear (Back) track: | 1559 mm | 1612 mm |
| Ride height(clearance): | 130 mm | 124 mm |
| Minimum volume of Luggage (trunk): | 180 l | 300 l |
| Maximum amount of Luggage (trunk): | 310 l | 385 l |
| Front suspension: | Double wishbone | |
| Rear suspension: | Multi-link independent | Independent multi-link |
| Max weight: | 1750 kg | 2380 kg |
| Front brakes: | Ventilated discs | Ventilated discs |
| Rear brakes: | Ventilated discs | Ventilated discs |
| Kerb Weight: | 1420 kg | 1880 kg |
| ABS: | yes | |
| Steering type: | Steering rack and pinion | |
| Power steering: | Electric Steering | Electric Steering |
| Minimum turning circle (turning diameter): | 10.7 m | 11.4 m |
| Permitted trailer load with brakes (12%): | 1800 kg | |
| Permitted trailer load without brakes: | 750 kg | |
| Permitted towbar download: | 75 kg | |
| Tire size: | 225/45 R17 | 225/50 R17 |
| Wheel rims size: | 8J x 17 | 7.5J x 17 |