AO Silver Member
Join Date: Mar 2003
I'd be looking for anything touching the engine that might transmit through the bulkhead. It's possible that something has been moved in a service.
If it was more through the seat than the steering wheel I'd slacken off all the exhaust fixings and make sure they were tightened without stressing the pipe.
I once had a brand new hatchback in for diagnosis that had a diff whine at the rear. As it was front wheel drive the dealer was at a loss. The front fixing was screwed sideways so that it was solid against the gearbox. The middle fixing was loose and held no weight. The rear fixing had been assembled with an air gun so that it was at 90 degrees to the body and again solid. Therefore the gearbox noise went straight down the exhaust and into the boot floor. I suspect somewhere in the delivery process (on and off transporters) somebody had damaged the exhaust and did a quick repair.