(1978 Mercedes 450SLC 5.0) The 450SLC 5.0 was an SLC 4-seat coupe powered by Mercedes-Benz’s brand new 5.0-liter aluminum block V8. Produced in low numbers for 1978 and 1979, this model existed primarily to serve Mercedes-Benz in rallye racing. For 1980 it became known as the 500SLC and was produced through 1981, the final year for all SLCs. Trunklid spoilers as seen here were standard equipment. (Wheels on this car are not original equipment.)