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2012 BMW Z4 Review
2012 BMW Z4
Roadster sDrive28i
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2012 Porsche Boxster Review
2012 Porsche Boxster
Roadster Base
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General InformationZ4 sDrive28iBoxster Base
MSRP$48,650$48,100
ClassRoadsterRoadster
BodystyleConvertibleConvertible
Rating
Standard Standard Optional Optional
EnginesZ4 sDrive28iBoxster Base
2.0-liter I4 turbo 240 hpStandardNot Available
Mileage City/Hwy [mpg]23 / 34---
2.9-liter Flat-6 255 hpNot AvailableStandard
Mileage City/Hwy [mpg]---19 - 20 (PDK) / 27 - 29 (PDK)
Transmissions
6-speed manualStandardStandard
7-speed dual-clutch (PDK)Not AvailableOptional
8-speed automaticOptionalNot Available
Exterior DimensionsZ4 sDrive28iBoxster Base
Length [in.]166.9172.1
Width [in.]70.576.9
Height [in.]50.850.9
Wheelbase [in.]98.395.1
Front Track [in.]59.558.7
Rear Track [in.]61.460.4
Exterior Features
2 doorsStandardStandard
Fog LightsStandardStandard
Rear Fog LightsNot AvailableStandard
Power Door MirrorsStandardStandard
Folding Door MirrorsStandardStandard
Heated Door MirrorsStandardStandard
Convertible TopStandardStandard
Retractable HardtopStandardNot Available
Interior DimensionsZ4 sDrive28iBoxster Base
Seating Cap.22
Headroom Front [in.]39.137.6
Legroom Front [in.]42.233.5
Shoulderroom Front [in.]53.351.5
Hiproom Front [in.]---53.4
Cargo Capacity [cu-ft.]8.09.9
Interior Features
Air ConditioningStandardStandard
Cruise ControlStandardStandard
CupholdersStandardStandard
Power WindowsStandardStandard
Rear Window DefoggerStandardStandard
Remote Keyless EntryStandardStandard
TachometerStandardStandard
Trip ComputerStandardStandard
Vehicle Information SystemStandardNot Available
Garage-door TransmitterNot AvailableStandard
Leatherette Seat-UpholsteryStandardNot Available
Part-Leatherette Seat-UpholsteryNot AvailableStandard
Bucket Driver's SeatStandardStandard
Manual Driver AdjustmentsStandardNot Available
Bucket Passenger SeatStandardStandard
Manual Passenger AdjustmentsStandardNot Available
6-way Front SeatStandardStandard
6-way Passenger SeatStandardStandard
RadioStandardStandard
CD-PlayerStandardStandard
HD RadioStandardNot Available
Satellite-radio capabilityStandardStandard
Wireless ConnectivityStandardStandard
11 SpeakersStandardNot Available
4 SpeakersNot AvailableStandard
Safety FeaturesZ4 sDrive28iBoxster Base
Anti-lock BrakesStandardStandard
Brake AssistStandardStandard
Stability Control (ESC)StandardStandard
Front AirbagsStandardStandard
Front Side AirbagsStandardStandard
Side-Curtain AirbagsNot AvailableStandard
Knee AirbagStandardNot Available
Traction ControlStandardStandard
Tire-pressure MonitorStandardStandard
Emergency Communication SystemStandardNot Available
Technical Features
DrivelineRWDRWD
Xenon HeadlightsStandardNot Available
Day-time Running-lightsStandardNot Available
DirectionallyadaptiveheadlightsStandardNot Available
Security SystemStandardStandard
Theft DeterrentStandardStandard
Tire-pressure MonitorStandardStandard
Weights & Capacities
Weight [lbs.]3,2632,943
Weight Distribution47 / 53---
GVWR [lbs.]3,858---
Coefficient of Drag0.340.29
Fuel Capacity [gal.]14.516.9
Steering
Power SteeringStandardStandard
Tilting Steering-WheelStandardStandard
Telescoping Steering-WheelStandardStandard
Suspension
Front MacPherson StrutsStandardStandard
Rear Multi-LinkStandardNot Available
Rear MacPherson StrutsNot AvailableStandard
Adaptive SuspensionStandardStandard
Tires
Front P205/55 ZR17Not AvailableStandard
Front P225/45 VR17StandardNot Available
Rear P225/45 VR17StandardNot Available
Rear P235/50 ZR17Not AvailableStandard
Brakes
Front Vented Disc BrakesStandardStandard
Rear Vented Disc BrakesStandardStandard