No, not really. If the noise rises and falls in volume when you rev the engine, then it's engine: exhaust, misfiring, timing belt, tappets, worn alternator bearings, worn timing belt tensioner bearing, etc. If it rises and falls with the speed of the vehicle along the road, then it's drivetrain: gearbox, cv joints or wheel bearings. Can you replicate the noise by just revving the engine with the car standing still in neutral? Or does it only get loud when the car is moving? The vibration: does it wobble the steering wheel? (wheels out of balance) Or does it feel like the whole big chunk of engine up front wants to jump out from under the bonnet? (misfiring, broken mountings). You mention the car was in an accident. Was it a front ender - that is, was the engine knocked around, chassis bent at the front? I've seen panel beaters put cars back together where they looked wonderful, but they never thought to get a mechanic to put the mechanical bits right inside their lovely shiny newly-repaired bodywork. All the panelbeater did was make it look good, and has probably overlooked broken mountings, bent or damaged driveshafts, wheel bearings which are failing because everything is misaligned. Sweet-talk your mechanic on Tuesday and fill him in on what happened in the accident. Then he'll have a heads-up and know what to look for.