Boston’s Local Independent Mechanic

Specializing in BMW, Porsche, and Mini.

Porsche Service



German Performance Service is a Porsche Specialist. We are versed in all aspects of air and watercooled cars, both maintenance and performance upgrades.

German Performance can perform factory-scheduled service with the same tools as the dealer, but with personalized attention and responsible oversight.

Our shop rate is $114 an hour. Compare this to the local dealerships who use a scaled hourly rate designed to confuse and surprise the customer.

911 Engine Build

911 Engine Build


German Performance Service has years of experience preparing cars for driver’s schools, track days and even professional racing. Marc has worked with Black Swan racing as well as campaigned his own GT3 Cup Car in endurance racing.  We are a dealer for most quality aftermarket brands including AWE, GIAC, Koni, Motec and other acknowledged motorsport brands.

marc porsche





E46 M3 Track Day