Comparison Infiniti Q50 (facelift 2017) 3.0t V6 (400 Hp) AWD Automatic & Mercedes-Benz S-class (W222) S 500 (455 Hp) 4MATIC 7G-TRONIC & Kia Cadenza II (facelift 2019) 3.3 V6 GDI (290 Hp) Automatic
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| Brand: | Infiniti | Mercedes-Benz | Kia |
| Model: | Q50 | S-class | Cadenza |
| Generation: | Q50 (facelift 2017) | S-class (W222) | Cadenza II (facelift 2019) |
| Engine / modification: | 3.0t V6 (400 Hp) AWD Automatic | S 500 (455 Hp) 4MATIC 7G-TRONIC | 3.3 V6 GDI (290 Hp) Automatic |
| Production start: | 2018 year | 2013 year | 2019 year |
| Production end: | 2015 year | 2021 year | |
| Coupe type: | Sedan | Sedan | Sedan |
| Powertrain Architecture: | Internal Combustion engine | ||
| Num. of Doors: | 4 | 4 | 4 |
| Num. of seats: | 5 | 4 | 5 |
| Fuel consumption / economy - urban: | 12.5 l/100 km | 12.8-13.3 l/100 km | 11.8 l/100 km |
| Fuel consumption / economy - extra urban: | 9.3 l/100 km | 6.9-7.5 l/100 km | 8.4 l/100 km |
| Fuel consumption / economy - combined: | 11.1 l/100 km | 9.1-9.6 l/100 km | 10.2 l/100 km |
| Fuel Type: | Petrol (Gasoline) | Petrol (Gasoline) | Petrol (Gasoline) |
| Fuel tank volume: | 80 l | 70 l | |
| Emission standard: | Euro 6 | ||
| CO2 emissions: | 211-225 g/km | ||
| Power: | 400 hp | 455 hp | 290 hp |
| Max power in: | 6400 rpm. | 5250-5500 rpm. | 6400 rpm. |
| Maximum speed: | 250 km/h | ||
| Acceleration from 0 to 100 km/h: | 5.2 sec | 4.8 sec | |
| Torque: | 475 Nm @ 1600-5200 rpm. | 700 Nm @ 1800-3500 rpm. | 343 Nm @ 5200 rpm. |
| Model Engine: | VR30DDTT | M 278.929 | Lambda II |
| Engine position: | Front, longitudinal | Front, longitudinal | Front, longitudinal |
| Engine displacement: | 2997 cm3 | 4663 cm3 | 3342 cm3 |
| Engine oil capacity: | 8.0 l | 6.5 l | |
| Coolant: | 12.1 l | 8.6 l | |
| Fuel System: | Direct injection | Direct injection | Direct injection |
| Aspiration / Turbine: | Twin-Turbo | Turbocharger | Naturally aspirated engine |
| Position of cylinders: | V engine | V engine | V engine |
| Valvetrain: | DOHC | ||
| Number of cylinders: | 6 | 8 | 6 |
| Number of valves per cylinder: | 4 | 4 | |
| Compression ratio: | 10.5 | 12 | |
| Piston Stroke: | 83.8 mm | ||
| Cylinder Bore: | 92 mm | ||
| Wheel Drive: | All wheel drive (4x4) | All wheel drive (4x4) | Front wheel drive |
| Number of Gears (automatic transmission): | 7 | 7G-TRONIC PLUS | 8 |
| Length: | 4815 mm | 5116 mm | 4996 mm |
| Width: | 1824 mm | 1899 mm | 1869 mm |
| Height: | 1453 mm | 1496 mm | 1471 mm |
| Wheelbase: | 2850 mm | 3035 mm | 2855 mm |
| Front track: | 1624 mm | 1603-1608 mm | |
| Rear (Back) track: | 1637 mm | 1610-1615 mm | |
| Front overhang: | 888 mm | 986 mm | |
| Rear overhang: | 1193 mm | 1156 mm | |
| Minimum volume of Luggage (trunk): | 382 l | 510 l | 453 l |
| Front suspension: | Independent multi-link | Independent, Spring McPherson, with stabilizer | |
| Rear suspension: | Multi-link independent | Multi-link independent | |
| Max weight: | 2715 kg | ||
| Front brakes: | Ventilated discs | Ventilated discs | |
| Rear brakes: | Ventilated discs | Ventilated discs | |
| Kerb Weight: | 1975 kg | ||
| ABS: | yes | yes | |
| Steering type: | Steering rack and pinion | Steering rack and pinion | Steering rack and pinion |
| Power steering: | Electric Steering | Electric Steering | Electric Steering |
| Minimum turning circle (turning diameter): | 11.9 m | 11.3 m | |
| Tire size: | 245/40 R19 | 245/50 R18 | 245/45 R18; 245/40 R19 |
| Wheel rims size: | 9.0J x 19 | R18 | 7.5J x 18; 8.0J x 19 |