Comparison Infiniti Q70 (facelift 2015) 5.6 V8 (420 Hp) Automatic & Alpina B4 Cabrio (facelift 2017) S 3.0 (440 Hp) Switch-Tronic & Hyundai Sonata IV (EF, facelift 2001) 2.7 V6 GLS (173 Hp)
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| Brand: | Infiniti | Alpina | Hyundai |
| Model: | Q70 | B4 | Sonata |
| Generation: | Q70 (facelift 2015) | B4 Cabrio (facelift 2017) | Sonata IV (EF, facelift 2001) |
| Engine / modification: | 5.6 V8 (420 Hp) Automatic | S 3.0 (440 Hp) Switch-Tronic | 2.7 V6 GLS (173 Hp) |
| Production start: | 2015 year | 2017 year | 2001 year |
| Production end: | 2018 year | 2004 year | |
| Coupe type: | Sedan | Cabriolet | Sedan |
| Num. of Doors: | 4 | 2 | 4 |
| Num. of seats: | 5 | 4 | 5 |
| Fuel consumption / economy - urban: | 14.7 l/100 km | 11.1 l/100 km | 13.6 l/100 km |
| Fuel consumption / economy - extra urban: | 9.8 l/100 km | 6.7 l/100 km | 7.4 l/100 km |
| Fuel consumption / economy - combined: | 8.3 l/100 km | 9.7 l/100 km | |
| Fuel Type: | Petrol (Gasoline) | Petrol (Gasoline) | Petrol (Gasoline) |
| Drag coefficient: | 0.27 | 0.32 | |
| Fuel tank volume: | 76 l | 60 l | 65 l |
| Emission standard: | Euro 6 | Euro 3 | |
| CO2 emissions: | 190 g/km | ||
| Power: | 420 hp | 440 hp | 173 hp |
| Max power in: | 6000 rpm. | 5500-6250 rpm. | 6000 rpm. |
| Maximum speed: | 304 km/h | 220 km/h | |
| Acceleration from 0 to 100 km/h: | 4.3 sec | 8.2 sec | |
| Torque: | 565 Nm @ 4400 rpm. | 660 Nm @ 3000-4500 rpm. | 245 Nm @ 4000 rpm. |
| Engine position: | Front, longitudinal | Front, longitudinal | Front, transverse |
| Engine displacement: | 5552 cm3 | 2979 cm3 | 2656 cm3 |
| Engine oil capacity: | 4.5 l | ||
| Coolant: | 8.6 l | ||
| Fuel System: | Direct injection | Direct injection | Multi-point injection |
| Aspiration / Turbine: | BiTurbo | ||
| Position of cylinders: | V engine | Inline | V engine |
| Valvetrain: | DOHC, VVEL | DOHC | |
| Number of cylinders: | 8 | 6 | 6 |
| Number of valves per cylinder: | 4 | 4 | 4 |
| Compression ratio: | 11.5 | 10.2 | 10 |
| Piston Stroke: | 92 mm | 89.6 mm | 75 mm |
| Cylinder Bore: | 98 mm | 84 mm | 86.7 mm |
| Wheel Drive: | Rear wheel drive | Rear wheel drive | Front wheel drive |
| Number of Gears (automatic transmission): | 7 ASC | 8 Switch-Tronic | 4 |
| Number of Gears (manual transmission): | 5 | ||
| Length: | 4981 mm | 4640 mm | 4747 mm |
| Width: | 1844 mm | 1825 mm | 1820 mm |
| Height: | 1501 mm | 1380 mm | 1422 mm |
| Wheelbase: | 2901 mm | 2810 mm | 2700 mm |
| Front track: | 1575 mm | 1552 mm | 1540 mm |
| Rear (Back) track: | 1570 mm | 1576 mm | 1530 mm |
| Minimum volume of Luggage (trunk): | 422 l | 220 l | 430 l |
| Maximum amount of Luggage (trunk): | 370 l | 430 l | |
| Front suspension: | Double wishbone | Independent, Spring McPherson, with stabilizer | |
| Rear suspension: | Independent, spring multi-link with stabilizer | Multi-link independent | |
| Max weight: | 2300 kg | 2020 kg | |
| Front brakes: | Ventilated discs | Ventilated discs | Ventilated discs |
| Rear brakes: | Ventilated discs | Ventilated discs | Disc |
| Kerb Weight: | 1834 kg | 1915 kg | 1428 kg |
| ABS: | yes | yes | yes |
| Steering type: | Steering rack and pinion | Steering rack and pinion | Steering rack and pinion |
| Power steering: | Electric Steering | Electric Steering | Hydraulic Steering |
| Minimum turning circle (turning diameter): | 11.2 m | 11.2 m | |
| Permitted trailer load with brakes (12%): | 1700 kg | ||
| Permitted trailer load without brakes: | 750 kg | ||
| Tire size: | 245/50 R18 | 245/30 ZR20; 265/30 ZR20 | 205/65 R15 |
| Wheel rims size: | 8J x 18 | 8J x 20; 9J x 20 | R15 |