Experience on behalf of test drive

Acc.to a single test drive any of us can not judge a life, and longterm performance of any vehicle. But after entering in the cabin of the car everyone should fell like.......is not sitting in mahindra,it properly feels like the Mercedes gls. Engine is also very refined and well tuned, we hardly hear the outside voice in the cabin whether its of engine, tyres and any other type of voice. Ride is bumpy as compared to its other rivals. But afterall don't feel uncomfort.