Comparison Aston Martin DB4 Convertible 3.7 (243 Hp) & Audi A5 Sportback (8TA) 3.0 TDI V6 (240 Hp) quattro S tronic & Buick Regal II Coupe 3.2 V6 (97 Hp) Automatic
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| Brand: | Aston Martin | Audi | Buick |
| Model: | DB4 | A5 | Regal |
| Generation: | DB4 Convertible | A5 Sportback (8TA) | Regal II Coupe |
| Engine / modification: | 3.7 (243 Hp) | 3.0 TDI V6 (240 Hp) quattro S tronic | 3.2 V6 (97 Hp) Automatic |
| Production start: | 1961 year | 2009 year | 1978 year |
| Production end: | 1963 year | 2011 year | 1980 year |
| Coupe type: | Cabriolet | Sedan | Coupe |
| Num. of Doors: | 2 | 4 | 2 |
| Num. of seats: | 4 | 4 | 5 |
| Fuel consumption / economy - urban: | 8.3 l/100 km | 13.1 l/100 km | |
| Fuel consumption / economy - extra urban: | 5.7 l/100 km | 9.0 l/100 km | |
| Fuel consumption / economy - combined: | 6.6 l/100 km | 11.2 l/100 km | |
| Fuel Type: | Petrol (Gasoline) | Diesel | Petrol (Gasoline) |
| Drag coefficient: | 0.30 | 0.47 | |
| Fuel tank volume: | 64 l | 68 l | |
| Emission standard: | EURO V | ||
| CO2 emissions: | 174 g/km | ||
| Power: | 243 hp | 240 hp | 97 hp |
| Max power in: | 5000 rpm. | 4000-4400 rpm. | 3800 rpm. |
| Maximum speed: | 225 km/h | 250 km/h | |
| Acceleration from 0 to 100 km/h: | 6.1 sec | ||
| Torque: | 325 Nm/4200 rpm. | 500 Nm/1500-3000 rpm. | 210 Nm @ 2000 rpm. |
| Engine position: | Front, longitudinal | Front, longitudinal | Front, longitudinal |
| Engine displacement: | 3670 cm3 | 2967 cm3 | 3216 cm3 |
| Engine oil capacity: | 7.4 l | ||
| Fuel System: | Carburettor | Diesel Commonrail | Carburettor |
| Aspiration / Turbine: | Turbo / Intercooler (Turbocharging / Intercooler) | ||
| Position of cylinders: | Inline | V engine | V engine |
| Valvetrain: | DOHC | DOHC | |
| Number of cylinders: | 6 | 6 | 6 |
| Number of valves per cylinder: | 4 | 2 | |
| Compression ratio: | 8.25 | 16.8 | 8 |
| Piston Stroke: | 92 mm | 91.4 mm | 86.36 mm |
| Cylinder Bore: | 92 mm | 83 mm | 88.9 mm |
| Wheel Drive: | All wheel drive (4x4) | Rear wheel drive | |
| Number of Gears (automatic transmission): | 7 S tronic | 3 Hydramatic | |
| Number of Gears (manual transmission): | 4 | ||
| Length: | 4480 mm | 4711 mm | 5080 mm |
| Width: | 1676 mm | 1854 mm | 1781 mm |
| Height: | 1323 mm | 1391 mm | 1356 mm |
| Wheelbase: | 2490 mm | 2810 mm | 2746 mm |
| Front track: | 1372 mm | 1590 mm | 1486 mm |
| Rear (Back) track: | 1360 mm | 1575 mm | 1468 mm |
| Ride height(clearance): | 177 mm | ||
| Minimum volume of Luggage (trunk): | 480 l | 462 l | |
| Maximum amount of Luggage (trunk): | 980 l | ||
| Front suspension: | Double wishbone | Independent multi-link | Independent, spring |
| Rear suspension: | dependent spring suspension | Independent, spring multi-link with stabilizer | Suspension De-Dion |
| Max weight: | 2250 kg | ||
| Front brakes: | Disc | Ventilated discs | Disc |
| Rear brakes: | Disc | Disc | Drum |
| Kerb Weight: | 1308 kg | 1720 kg | 1438 kg |
| ABS: | yes | ||
| Steering type: | Steering rack and pinion | Steering rack and pinion | Cone worm with recirculation balls |
| Power steering: | Hydraulic Steering | ||
| Max. roof load: | 90 kg | ||
| Permitted trailer load with brakes (8%): | 2100 kg | ||
| Minimum turning circle (turning diameter): | 10.3 m | 11.5 m | 12.8 m |
| Permitted trailer load with brakes (12%): | 1900 kg | ||
| Permitted trailer load without brakes: | 750 kg | ||
| Permitted towbar download: | 80 kg | ||
| Tire size: | 225/50 R17 | 195/75 R14 | |
| Wheel rims size: | 7,5J x 17 | R14 |