2011 BMW 1-Series Convertible

2011 BMW 1-Series Convertible

2011 BMW 1-Series Convertible

The 2011 1-Series convertible from BMW is a nimble sports car that lets in the sun. The rear-wheel-drive drop-top comes in three variations with two drive train choices. The 128i and 128i SULEV versions share the same smooth revving six-cylinder engine that puts out 230 horsepower. The 135i comes with a more powerful, turbocharged six-cylinder engine and additional performance improvements.

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BMW 1-Series Convertible (2011)

All three trim levels of the 1-Series class of BMWs come with a six-speed manual transmission as standard equipment. The 128i and 128i SULEV cars have an option for a six-speed automatic, and the 135i can be ordered with a seven-speed dual-clutch automatic.

Common to all trim levels of the 1-Series convertible are an AM/FM/CD/MP3 audio with auxiliary input, light weight alloy wheels, no-cost leather seats, fold-down rear seats, dual-zone automatic climate control, and 8-way adjustable front seats. And naturally, BMW offers many additional options.

The 128i Convertible is powered by BMW's 3.0-liter, 230 horsepower inline six-cylinder engine generating 200 pound-feet of torque.

Like its fixed-roof stablemate, the 128i Convertible features Valvetronic valvetrain management and aluminum/magnesium cylinder block construction-core elements of BMW's EfficientDynamics.

The 135i Convertible, features BMW's twin-turbocharged 3.0-liter inline six-cylinder engine producing 300 horsepower and 300 pound-feet of torque from as low as 1,400 rpm.

With its direct piezo gasoline injectors, twin low-mass turbochargers and air-to-air intercooling, the 135i Coupe accelerates to 62 mph in 5.3 seconds. while the Convertible takes 5.6 seconds. Both engines feature on-demand engine coolant pumps that improve fuel economy and reduce parasitic losses for increased output.

BMW 1 Series 135i Convertible Engine

Standard Engine 3.0L I6

Standard Transmission 6 Speed Manual

Cylinders 6

Horsepower @RPM 300@5800

Fuel Economy Cty/Hwy 17 / 26

Combined Fuel Economy 20

EPA Class Sub-Compact

Number of Valves 24

Fuel Type System Gas Engine / Electronic Fuel Injected

Turbo (Yes/No) Yes

Overdrive Transmission Yes

Compression 10.2:1

Displacement 2979 / 182

Bore X Stroke 3.313.53

Cruising Range 280 miles

Power to Weight Ratio 12.2

Final Drive Ratio Yes

Valves Configuration Dual Overhead Cam / Twin Overhead Cam

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