For rather than learning the battery was flat or spark plugs faulty, staff revealed a rabbit had been living in his Rover.
Mechanics discovered the bunny in the bonnet of the car when they put it on a ramp to carry out an MoT.
After removing a panel underneath, Eoin Keenan, of Riddell's Garage in Bo'ness, noticed nuts and seeds.
And when he shone a torch in the hole he saw two eyes starring back at him. Then the bunny jumped out and hopped off.
The retired Labour MP for Linlithgow said he had seen a rabbit running around the car just days before.
"It never occurred to me it had taken up residence there."