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 Comparison: 2009 Audi A8 vs 2009 BMW 750Li vs 2009 Mercedes-Benz S550
| | 2009 AUDI A8L 4.2 QUATTRO | 2009 BMW 750Li | 2009 MERCEDES-BENZ S550 | | POWERTRAIN/CHASSIS | | Drivetrain layout | Front engine, AWD | Front engine, RWD | Front engine, RWD | | Engine type | 90-deg V-8, alum block/heads | Twin-turbo 90-deg V-8, alum block/heads | 90-deg V-8, alum block/heads | | Valvetrain | DOHC, 4 valves/cyl | DOHC, 4 valves/cyl | DOHC, 4 valves/cyl | | Displacement | 254.1 cu in/4163 cc | 268.2 cu in/4395 cc | 333.2 cu in/5461 cc | | Compression ratio | 12.5:1 | 10.0:1 | 10.7:1 | | Power (SAE net) | 350 hp @ 6800 rpm | 400 hp @ 5500 rpm | 382 hp @ 6000 rpm | | Torque (SAE net) | 325 lb-ft @ 3500 rpm | 450 lb-ft @ 1800 rpm | 391 lb-ft @ 2800 rpm | | Redline | 6800 rpm | 7500 rpm | 6500 rpm | | Weight to power | 12.7 lb/hp | 11.6 lb/hp | 12.1 lb/hp | | Transmission | 6-speed automatic | 6-speed automatic | 7-speed automatic | | Axle/final-drive ratios | 3.31:1/2.29:1 | 3.46:1/2.39:1 | 2.65:1/1.93:1 | | Suspension, front; rear | Struts, air springs, adj shocks, anti-roll bar; struts, air springs, adj shocks, anti-roll bar | Multilink, air springs, adj shocks, anti-roll bar; multilink, air springs, adj shocks, anti-roll bar | Multilink, coil and hydraulic springs, adj shocks; multilink, coil & hydraulic springs, adj shocks | | Steering ratio | 16.1:1 | 19.1:1 | 17.8:1 | | Turns lock to lock | 2.8 | 3.2 | 2.8 | | Brakes, f;r | 14.2-in vented disc; 12.2-in vented disc, ABS | 14.7-in vented disc; 14.5-in vented disc, ABS | 13.2-in vented disc; 11.8-in vented disc, ABS | | Wheels | 9.0 x 20-in, cast alum | 8.5 x 19-in; 9.5 x 19-in, cast alum | 8.5 x 19-in; 9.5 x 19-in, cast alum | | Tires, F;R | 275/35R20 102Y Dunlop SP Sport Maxx | 245/45R19 98Y; 27540R19 101Y Goodyear Excellence | 255/40R19 100Y; 275/40R19 101Y Continental SportContact 2 | | DIMENSIONS | | Wheelbase | 121.0 in | 126.4 in | 124.6 in | | Track, f/r | 64.1/63.6 in | 63.4/65.0 in | 63.0/63.2 in | | Length x width x height | 204.4 x 74.6 x 57.3 in | 205.3 x 74.9 x 58.3 in | 205.0 x 73.7 x 58.0 in | | Turning circle | 41.7 ft | 41.7 ft | 40.0 ft | | Curb weight | 4449 lb | 4659 lb | 4614 lb | | Weight dist., f/r | 57/43% | 51/49% | 53/47% | | Seating capacity | 5 | 5 | 5 | | Headroom, f/r | 37.4/38.3 in | 40.8/38.9 in | 37.8/38.5 in | | Legroom, f/r | 41.3/42.3 in | 41.2/44.3 in | 41.9/42.3 in | | Shoulder room, f/r | 59.1/57.5 in | 59.2/57.6 in | 59.1/58.7 in | | Cargo volume | 14.6 cu ft | 14.0 cu ft | 16.3 cu ft | | TEST DATA | | Acceleration to mph | | 0-30 | 2.0 sec | 1.7 sec | 2.0 sec | | 0-40 | 3.2 | 2.8 | 2.9 | | 0-50 | 4.7 | 3.8 | 4.0 | | 0-60 | 6.3 | 4.9 | 5.3 | | 0-70 | 8.0 | 6.6 | 6.9 | | 0-80 | 10.5 | 8.0 | 8.7 | | 0-90 | 13.0 | 9.7 | 10.8 | | 0-100 | 15.8 | 11.9 | 13.1 | | Passing, 45-65 mph | 3.0 | 2.3 | 2.6 | | Quarter mile | 14.7 sec @ 96.1 mph | 13.4 sec @ 105.7 mph | 13.8 sec @ 102.3 mph | | Braking, 60-0 mph | 114 ft | 112 ft | 115 ft | | Lateral acceleration | 0.87 g (avg) | 0.86 g (avg) | 0.89 g (avg) | | MT figure eight | 26.3 sec @ 0.68 g (avg) | 26.2 sec @ 0.70 g (avg) | 26.3 sec @ 0.69 g (avg) | | Top-gear revs @ 60 mph | 1700 rpm | 1800 rpm | 1500 rpm | | CONSUMER INFO | | Base price | $78,725 | $86,025 | $91,225 | | Price as tested | $94,425 | $105,370 | $111,550 | | Stability/traction control | Yes/yes | Yes/yes | Yes/yes | | Airbags | Dual front, f/r side, f/r curtain, front knee | Dual front, front side, f/r head | Dual front, f/r side, f/r curtain | | Basic warranty | 4 yrs/50,000 miles | 4 yrs/50,000 miles | 4 yrs/50,000 miles | | Powertrain warranty | 4 yrs/50,000 miles | 4 yrs/50,000 miles | 4 yrs/50,000 miles | | Roadside assistance | 4 yrs/Unlimited | 4 yrs/Unlimited | Unlimited | | Fuel capacity | 23.8 gal | 21.7 gal | 23.8 gal | | EPA city/hwy econ | 16/23 mpg | 14/22 mpg | 14/22 mpg | | CO2 emissions | 1.05 lb/mile | 1.16 lb/mile | 1.16 lb/mile | | Recommended fuel | Unleaded premium | Unleaded premium | Unleaded premium |
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