Roadster Roundup: Porsche Boxster S vs. Mercedes-Benz SLK55 AMG vs. BMW Z4 sDrive35is

Porsche Boxster S

BASE PRICE $61,850 Powertrain
ENGINE 24-valve DOHC flat-6
DISPLACEMENT 3.4 liters (210 cu in)
POWER 315 hp @ 6700 rpm
TORQUE 266 lb-ft @ 4500-5800 rpm
TRANSMISSION 7-speed automatic
DRIVE Rear-wheel Chassis
STEERING Electrically assisted
SUSPENSION, FRONT Strut-type, coil springs
SUSPENSION, REAR Multilink, coil springs
BRAKES Vented discs, ABS
TIRES Pirelli PZero
TIRE SIZE F, R 235/35YR-20, 265/35YR-20 Measurements
L x W x H 172.2 x 77.9 x 50.0 in
WHEELBASE 97.4 in
TRACK F/R 60.1/60.6 in
WEIGHT 2976 lb
WEIGHT DIST. F/R 46.0/54.0%
CARGO CAPACITY 5.3/4.6 cu ft (front trunk/rear)
EPA MILEAGE 21/30 mpg
0-60 MPH 4.5 sec
TOP SPEED 172 mph

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BMW Z4 sDrive35is

BASE PRICE $65,095 Powertrain
ENGINE 24-valve DOHC twin-turbo I-6
DISPLACEMENT 3.0 liters (182 cu in)
POWER 335 hp @ 5900 rpm
TORQUE 332 lb-ft @ 1500 rpm (369 lb-ft with overboost)
TRANSMISSION 7-speed automatic
DRIVE Rear-wheel Chassis
STEERING Electrically assisted
SUSPENSION, FRONT Control arms, coil springs
SUSPENSION, REAR Multilink, coil springs
BRAKES Vented discs, ABS
TIRES Bridgestone Potenza RE050A
TIRE SIZE F, R 225/35YR-19, 255/30YR-19 Measurements
L x W x H 167.0 x 70.5* x 50.6 in
WHEELBASE 98.3 in
TRACK F/R 59.5/60.5 in
WEIGHT 3549 lb
WEIGHT DIST. F/R 49.3/50.7%
CARGO CAPACITY 10.9/6.4 cu ft (top up/down)
EPA MILEAGE 17/24 mpg
0-60 MPH 4.7 sec
TOP SPEED 155 mph *width without sideview mirrors

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Mercedes-Benz SLK55 AMG

BASE PRICE $68,375 Powertrain
ENGINE 32-valve DOHC V-8
DISPLACEMENT 5.5 liters (333 cu in)
POWER 415 hp @ 6800 rpm
TORQUE 398 lb-ft @ 4500 rpm
TRANSMISSION 7-speed automatic
DRIVE Rear-wheel Chassis
STEERING Hydraulically assisted
SUSPENSION, FRONT Strut-type, coil springs
SUSPENSION, REAR Multilink, coil springs
BRAKES F/R Vented discs/discs, ABS
TIRES Continental ContiSportContact
TIRE SIZE F, R 235/40YR-18, 255/35YR-18 Measurements
L x W x H 163.2 x 79.0 x 51.2 in
WHEELBASE 95.7 in
TRACK F/R 61.0/61.7 in
WEIGHT 3549 lb
WEIGHT DIST. F/R N/A
CARGO CAPACITY 10.1/6.4 cu ft (top up/down)
EPA MILEAGE 19/28 mpg
0-60 MPH 4.5 sec
TOP SPEED 155 mph All measurements per manufacturers