Spotted this today, some technical drawings of the Q3. Seems they've gotmeasurements on that might be useful for some..
http://www.the-blueprints.com/blueprints/cars/audi/47955/view/audi_q3_(2011)/
http://www.the-blueprints.com/blueprints/cars/audi/47955/view/audi_q3_(2011)/