Something does not seem right with that SL550 the acceleration times were very slow. 0-100km/h in 6.6sec is more or less the times of the 302hp 3valve per cylinder 5.0ltr 2002 model SL500. The SL550 should be doing at least 5.5sec to 100km/h and even the SL450 R231 time of 5,7sec seems slow, it should be at least 5.1sec.Did the SL550 have engine trouble?
M
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