On two different occasions I have noticed my car belched out a bit of smoke when I accelerated hard, both times on to a highway. It made me wonder, since most of the time I am really lugging the engine around town, if these engines are prone to a bit of buildup. Has anyone else noticed a bit of smoke during hard acceleration? I'm thinking a bottle of Techron once in a while might be in order.

It gets late early out there. - Yogi

While I haven't noticed black smoke, I notice some black residue that is on the chrome of the tailpipes.

Was your car not fully warmed up? I usually get more smoke while the car is still cold, but certainly nothing excessive.

Otherwise, every once in a while I gun down my car (love those lame riced up civics that line up next to me with the intention to have some fun with a hybrid, but end up regretting it for the rest of the day) and I don't notice any smoke.