Audi Sq5 Oil Leak. Audi q5 owners have reported 8 problems related to engine oil leaking (under the engine and engine cooling category). Hey all, last year i had my car inspected for an oil leak and it turned out the rear main seal and cam position sensor was leaking.

Audi garage said there was a bad oil leak with oil dripping onto the undertray. Had it looked at and they told me it was my engine oil cooler gaskets.