Drop the top and let yourself go in the 2013 BMW Roadster. Under the hood of the Z4 Roadster lies either a 2.0 liter inline 4-cylinder engine offering the unlikely pairing of impressive power and fuel efficiency a 3.0 liter inline 6-cylinder or turbocharged 335 horsepower 6-cylinder. Inside the Z sport seats feature more pronounced side bolsters designed to provide excellent lateral support during high performance driving. With the route taken care of you can concentrate on more important things - like enjoying every twist and turn along the way. Our optional onboard navigation system controlled via iDrive uses GPS satellites a DVD map and where available Real Time Traffic Information to guide you to your destination. The fully automatic retractable hardtop can be raised and lowered with the press of a button. The 2013 BMW Z4 Roadster It’s expected to produce gusts of exhilaration.