Individual with a fetish for machines. Typically desiring some form of
sexual congress with machines. Either very specific machines or very wide ranging in tastes.
Schlessinger published his story-showing his wide range of tastes.
The commonest is a love of vehicles-cars, motorbikes, trucks in particular. Boats and other variations can be found appealing too.
Other mechaphiles go for working engines,
power tools and similiar.
A wide variety of sexual techniques can be employed. One mechaphile (me) has a manual on how to make love to a car or other vehicle, for example. There are also groups on yahoo for the same fetishes.
autophile is referred to, however is incorrect.