Pete Schneider, Engineering Manager (2004-present)
A
lot of bad information in these responses. Ultimately, your car is
constantly fighting a battle of attrition. In that sense, driving it to
work is “bad" for it. Your engine began to die the first time it was
turned over at the factory where it was built. The manufacturer's job
then, is to build you an engine that dies as slowly as possible. You can
help this process by using quality oil at proper intervals and just
otherwise following the maintenance schedule in the owner's manual.
As
far as whether “revving” is “bad", that depends first of all on what
you mean by “revving”. If you're talking about goosing the throttle to
make that vroom vroom sound, in the grand scheme of things, that's not
really a substantial contributor to engine wear, though it is A
contributor.
If
you're bouncing off the rev limiter, as in, the pedal is flat down and
you're relying on the ECU to keep the engine from self destructing, that
is bad, if for no other reason than because the ECU does this by
cutting fuel, which means the engine spends some amount of time spinning
quickly with no fuel to lubricate the top piston ring. Not really a
recipe for reliability. But as some of the other answers stated, the
engine is designed to run up to the redline. The engine wears faster
when it spins faster, but not on some exponential scale. If that were
really a problem, the manufacturer has every ability to stop you from
doing it.
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