Comparison Renault 21 Hatchback (L48) 2.0 i Turbo (162 Hp) 4x4 & Cadillac CTS III 3.6 V6 (325 Hp) Automatic & Porsche 911 (996) GT3 3.6 (360 Hp)
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| Brand: | Renault | Cadillac | Porsche |
| Model: | 21 | CTS | 911 |
| Generation: | 21 Hatchback (L48) | CTS III | 911 (996) |
| Engine / modification: | 2.0 i Turbo (162 Hp) 4x4 | 3.6 V6 (325 Hp) Automatic | GT3 3.6 (360 Hp) |
| Production start: | 1989 year | 2014 year | 1999 year |
| Production end: | 1994 year | 2019 year | 2001 year |
| Coupe type: | Hatchback | Sedan | Coupe |
| Num. of Doors: | 5 | 4 | 2 |
| Num. of seats: | 5 | 5 | 2 |
| Fuel consumption / economy - urban: | 12 l/100 km | 13.1 l/100 km | 20.1 l/100 km |
| Fuel consumption / economy - extra urban: | 7.4 l/100 km | 8.1 l/100 km | 8.9 l/100 km |
| Fuel consumption / economy - combined: | 8.9 l/100 km | 10.7 l/100 km | 12.9 l/100 km |
| Fuel Type: | Petrol (Gasoline) | Petrol (Gasoline) | Petrol (Gasoline) |
| Drag coefficient: | 0.32 | 0.30 | |
| Fuel tank volume: | 62 l | 72 l | 89 l |
| Power: | 162 hp | 325 hp | 360 hp |
| Max power in: | 5500 rpm. | 6800 rpm. | 7200 rpm. |
| Maximum speed: | 217 km/h | 302 km/h | |
| Acceleration from 0 to 100 km/h: | 8.6 sec | 4.8 sec | |
| Torque: | 260 Nm @ 3000 rpm. | 373 Nm @ 4800 rpm. | 370 Nm @ 5000 rpm. |
| Model Engine: | J7R 756 | LFX | |
| Engine position: | Front, transverse | Front, longitudinal | Rear, longitudinal |
| Engine displacement: | 1995 cm3 | 3564 cm3 | 3600 cm3 |
| Engine oil capacity: | 6.5 l | 5.7 l | 11 l |
| Coolant: | 6.2 l | 11.3 l | 25 l |
| Fuel System: | Multi-point injection | Direct injection | Multi-point injection |
| Maximum engine speed: | 7200 rpm. | ||
| Aspiration / Turbine: | Turbocharging | ||
| Position of cylinders: | Inline | V engine | Boxer |
| Valvetrain: | OHC | DOHC-VVT | |
| Number of cylinders: | 4 | 6 | 6 |
| Number of valves per cylinder: | 2 | 4 | 4 |
| Compression ratio: | 8.5 | 11.5 | 11.7 |
| Piston Stroke: | 82 mm | 85.6 mm | 76.4 mm |
| Cylinder Bore: | 88 mm | 94 mm | 100 mm |
| Wheel Drive: | All wheel drive (4x4) | Rear wheel drive | Rear wheel drive |
| Number of Gears (automatic transmission): | - | 8 | |
| Number of Gears (manual transmission): | 5 | 6 | |
| Length: | 4460 mm | 4966 mm | 4430 mm |
| Width: | 1730 mm | 1833 mm | 1765 mm |
| Height: | 1415 mm | 1454 mm | 1270 mm |
| Wheelbase: | 2660 mm | 2910 mm | 2350 mm |
| Front track: | 1430 mm | 1560 mm | 1475 mm |
| Rear (Back) track: | 1400 mm | 1568 mm | 1495 mm |
| Minimum volume of Luggage (trunk): | 420 l | 388 l | |
| Maximum amount of Luggage (trunk): | 1290 l | 110 l | |
| Front suspension: | The depreciated rack | Independent, Spring McPherson, with stabilizer | Independent type McPherson |
| Rear suspension: | Torsion | Multi-link independent | Multi-link independent |
| Max weight: | 1800 kg | 1630 kg | |
| Front brakes: | Ventilated discs | Ventilated discs | Ventilated discs |
| Rear brakes: | Disc | Ventilated discs | Ventilated discs |
| Kerb Weight: | 1350 kg | 1640 kg | 1350 kg |
| ABS: | yes | yes | yes |
| Steering type: | Steering rack and pinion | Steering rack and pinion | Steering rack and pinion |
| Power steering: | Hydraulic Steering | Electric Steering | Hydraulic Steering |
| Minimum turning circle (turning diameter): | 11.3 m | ||
| Permitted trailer load without brakes: | 454 kg | ||
| Tire size: | 195/55 R15 | 245/45 R17; 245/40 R18; 275/35 R18; 255/35 R19 | 225/40 R18; 285/30 R18 |
| Wheel rims size: | R15 | 8.5J x 17; 8.5J x 18; 9.5J x 18; 8.5J x 19 |