Technical specifications
| Clear list | Infiniti Q50 | Kia Optima |
| Totals | Infiniti Q50 2.1d × | Kia Optima 2.4 × |
| Mark | Infiniti | Kia |
| Model | Q50 2.1d | Optima 2.4 |
| Year | 2017 | 2018 |
| Number of doors/seats | 4/5 | 4/5 |
| Body type | Sedan | Sedan |
| Unladen Weight | 1667 (1688) | 1575 |
| Gross Weight Limit | - | 2050 |
| Top Speed, km/h | 231 (230) | 210 |
| Acceleration 0-100 kph | 8.9 (8.7) | 9.1 |
| Minimum turning radius, m | 5.6 | - |
| Cargo Volume, min/max, L | 500 | 510 |
| Dimensions specifications, mm | Infiniti Q50 2.1d × | Kia Optima 2.4 × |
| Length | 4810 | 4855 |
| Width | 1820 | 1860 |
| Height | 1445 | 1485 |
| Wheelbase | 2850 | 2805 |
| Front/rear Track | 1545/1565 | 1594/1595 |
| Ground clearance | 126 | 155 |
| Engine specifications | Infiniti Q50 2.1d × | Kia Optima 2.4 × |
| Type | turbo diesel Common Rail | petrol Injection |
| Displacement, cm3 | 2143 | 2360 |
| Compression ratio | 16.2 | 11.3 |
| Number and arrangement of cylinders | 4 cylinders, in-line | 4 cylinders, in-line |
| The diameter of the cylinder x stroke, mm | 83x99 | 88x97 |
| Number of valves | 16 | 16 |
| Power, hp/rpm | 170/3400-4000 | 188/6000 |
| Max torque, Nm/RPM | 350/1400-3400 | 242/4000 |
| Transmission specifications | Infiniti Q50 2.1d × | Kia Optima 2.4 × |
| Gearbox | 6-speed manual / 7-speed automatic | 6-speed automatic |
| Drive Type | Rear wheel drive | Front wheel drive |
| Suspension specifications | Infiniti Q50 2.1d × | Kia Optima 2.4 × |
| Front | Upper and lower A-arm (double wishbone) | MacPherson strut |
| Rear | multi-link suspensions | multi-link suspensions |
| Tire Size | 225/50 R18 | 215/60 R16, 215/55 R17 |
| Disk | 5x114.3 ET45 d66.1
| 5x114.3 ET45 d67.1
|
| Brakes specifications | Infiniti Q50 2.1d × | Kia Optima 2.4 × |
| Front | Ventilated discs | Ventilated discs |
| Rear | Ventilated discs | Discs |
| Fuel consumption specifications, L/100 km | Infiniti Q50 2.1d × | Kia Optima 2.4 × |
| City | 5.5 (5.7) | 12 |
| Highway | 3.7 (3.9) | 6.2 |
| Combined | 4.3 (4.5) | 8.3 |
| Fuel | Diesel | 95 |
| Tank, L | 80 | 70 |
| Clear list | Infiniti Q50 | Kia Optima |
