Clean diesel

Mike Siegrist, Assistant Chief Engineer, General Motors Powertrains, took the time to talk to www.drivingthenation.com about General Motors’ new Chevy Cruze clean diesel engine.

What did General Motors have to modify on this European engine for the American market?

Is this a General Motors engine, or was it purchased from another company?

Volkswagen’s diesel engine is the most comparable, in compression ratios, to Chevy’s Cruze clean diesel engine. How does it differ?

What is VNT?