|1971||V-8-powered 350SL 4.5 (body style "W107" in Mercedes-Benz nomenclature) introduced to U.S. as as a 1972 model. Though introduced in Europe with a 3.5-liter engine, the W107 always carried a less efficient but detoxed 230-bhp, 4.5-liter, Iron-block V-8 here, coupled with a 3-speed automatic. Power-assisted steering, air conditioning, hard and soft-tops were standard.|
|1973||Name changed in American market to 450SL.|
|1974||Addition of 5-mph bumper. Horsepower declined to 190 bhp. California version acquired EGR and fuel injection.|
Addition of catalytic converters. Horsepower declined to 180 bhp.
Addition of cruise control, transistorized ignition, hydraulic valve adjusters; switch from Bosch electronic to Bosch Jetronic fuel injection.
|1977||Catalytic convertors moved downstream. Climate-control system introduced.|
|1980||3-way catalytic converter introduced, final drive ratio reduced. Horsepower declined to 160 bhp, but fuel economy increased.|
|1981||380SL with 3.8 liter, 155 bhp, all-alloy V-8 and 4-speed automatic introduced to U.S. market. Electric window lifts are standard.|
|1983||Recalibrated engine and transmission for improved performance and fuel economy.|
|1984||Switch from single-row to twin-row timing chain.|
|1985||ABS became standard; driver-side airbag was optional.|
|1986||560SL with with 5.6-litter, 227-bhp all-alloy V-8 and 4-speed transmission into U.S. market. Limited-slip differential, front air dam, leather upholstery, anti-theft alarm are standard.|
|1989||W107 production ended.|