Comparison Porsche 911 (991) Turbo 3.8 (520 Hp) PDK & Audi A5 Sportback (9T, facelift 2020) 40 TDI (190 Hp) quattro S tronic & Mercedes-Benz S-class Long (V140, facelift 1994) S 600 V12 (394 Hp) 5G-TRONIC
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| Brand: | Porsche | Audi | Mercedes-Benz |
| Model: | 911 | A5 | S-class |
| Generation: | 911 (991) | A5 Sportback (9T, facelift 2020) | S-class Long (V140, facelift 1994) |
| Engine / modification: | Turbo 3.8 (520 Hp) PDK | 40 TDI (190 Hp) quattro S tronic | S 600 V12 (394 Hp) 5G-TRONIC |
| Production start: | 2013 year | 2019 year | 1995 year |
| Production end: | 2016 year | 1998 year | |
| Coupe type: | Coupe | Sedan | |
| Num. of Doors: | 2 | 4 | 4 |
| Num. of seats: | 4 | 5 | 5 |
| Fuel consumption / economy - urban: | 16.6 l/100 km | 5.6-5.9 l/100 km | |
| Fuel consumption / economy - extra urban: | 11.8 l/100 km | 4.4-4.8 l/100 km | |
| Fuel consumption / economy - combined: | 14.1 l/100 km | 4.8-5.2 l/100 km | |
| Fuel Type: | Petrol (Gasoline) | Diesel | Petrol (Gasoline) |
| Drag coefficient: | 0.31 | ||
| Fuel tank volume: | 68 l | 58 l | 100 l |
| Emission standard: | EURO VId-TEMP-EVAP-ISC | ||
| CO2 emissions: | 129-138 g/km | ||
| Power: | 520 hp | 190 hp | 394 hp |
| Max power in: | 6000-6500 rpm. | 3800-4200 rpm. | 5200 rpm. |
| Maximum speed: | 312 km/h | 235 km/h | 250 , Electronically limited km/h |
| Acceleration from 0 to 100 km/h: | 7.6 sec | 6.6 sec | |
| Torque: | 660 Nm @ 1950-5000 rpm. | 400 Nm @ 1750-3000 rpm. | 570 Nm @ 3800 rpm. |
| Model Engine: | MA1.71 | M 120.982 | |
| Engine position: | Front, transverse | Front, longitudinal | |
| Engine displacement: | 1968 cm3 | 5987 cm3 | |
| Engine oil capacity: | 7.5 l | 10 l | |
| Coolant: | 20 l | ||
| Fuel System: | Direct injection | Diesel Commonrail | |
| Aspiration / Turbine: | Twin-Turbo | Turbocharger / Intercooler | |
| Position of cylinders: | Boxer | Inline | |
| Valvetrain: | DOHC | ||
| Number of cylinders: | 6 | 4 | 12 |
| Number of valves per cylinder: | 4 | 4 | 4 |
| Compression ratio: | 9.8 | 10 | |
| Piston Stroke: | 80.2 mm | ||
| Cylinder Bore: | 89 mm | ||
| Wheel Drive: | All wheel drive (4x4) | All wheel drive (4x4) | Rear wheel drive |
| Number of Gears (automatic transmission): | 7 PDK | 7 S tronic | 5 G-TRONIC |
| Length: | 4506 mm | 4757 mm | 5213 mm |
| Width: | 1880 mm | 1843 mm | 1886 mm |
| Width including mirrors: | 2029 mm | ||
| Height: | 1295 mm | 1386 mm | 1482 mm |
| Wheelbase: | 2450 mm | 2824 mm | 3140 mm |
| Front track: | 1587 mm | 1606 mm | |
| Rear (Back) track: | 1568 mm | 1579 mm | |
| Front overhang: | 898 mm | ||
| Rear overhang: | 1035 mm | ||
| Minimum volume of Luggage (trunk): | 525 l | ||
| Maximum amount of Luggage (trunk): | 115 l | ||
| Front suspension: | Independent type McPherson | Multi-link suspension | |
| Rear suspension: | Multi-link independent | Independent, spring multi-link with stabilizer | |
| Max weight: | 1990 kg | 2200 kg | 2720 kg |
| Front brakes: | Ventilated discs | Ventilated discs | |
| Rear brakes: | Disc | Ventilated discs | |
| Kerb Weight: | 1595 kg | 1605 kg | 2190 kg |
| ABS: | yes | yes | |
| Steering type: | Steering rack and pinion | Steering rack and pinion | Cone worm with recirculation balls |
| Power steering: | Electric Steering | Electric Steering | Hydraulic Steering |
| Max. roof load: | 90 kg | ||
| Permitted trailer load with brakes (8%): | 2000 kg | ||
| Minimum turning circle (turning diameter): | 10.4 m | 11.7 m | 12.51 m |
| Permitted trailer load with brakes (12%): | 1800 kg | ||
| Permitted trailer load without brakes: | 750 kg | ||
| Permitted towbar download: | 80 kg | ||
| Tire size: | 245/35 ZR20; 305/30 R20 | 225/50 R17; 245/40 R18 | 235/60 R16 |
| Wheel rims size: | 8.5J x 20; 11J x 20 | 7.5J x 17; 8.5J x 18 | 7.5J x 16 |