Visitors to the sales centre at the MG factory in Longbridge, Birmingham, today and over the weekend could drive home in a new car.
It's the first anniversary of the opening of the centre this weekend and to celebrate, everyone visiting will get the chance to drive away in a nearly-new MG6 for less than £500.
MG says the cars are ex-press and demonstrator approved used vehicles.
Customers will be able to put down a £495 deposit on a used MG6 with a sticker price of £9,995.
But customers will have to pay £198.84 each month for 59 months, and there's a final monthly payment of £199.84.
The firms says the "£500 down" offer is taking place alongside other frivolities such as party cakes, balloons, prizes and other fun.
Richard Bourton, MG's business and used car sales manager, said: "The £500 deposit deal will make it easier for many people to get into an MG6. It's a great opportunity for people who can't make a larger deposit on a new car to get behind the wheel of one of the best value-for-money cars on the market.
"Most of the cars are less than a year old. They have the balance of the original warranty, AA European Breakdown Assistance and the higher spec models will have lifelong subscription to Traffic Master."