Ian Blinkhorne, 51, of Stratford, pleaded guilty to selling a potentially dangerous car under the pretence of a private seller.
Blinkhorne was caught following a trading standards operation which identified a number of vehicle faults including faulty power steering, seized brakes, excessive corrosion to the drivers seat mounting and failed suspension.
Nuneaton Magistrates heard how he advertised the Ford Ka for sale on Facebook which was later sold to a woman who needed a car for the school run.
Blinkhorne gave the woman her money back once trading standards became involved.
He was given a 12 week prison sentence, suspended for 12 months and was also ordered to pay £1,500 in costs.