A ‘three-for-one’ deal could be offered by dealers to stimulate new car sales.

Broadspeed.com, which generates sales for dealers online, is trying to put the deal together for what is believed to be a seven-seat family vehicle.

The offer involves a customer paying list price for one of the vehicles and he or she receives two identical models for free – providing they buy three service plans.

Although the specification must be the same, the colours can be different.

Cost of the service plans depends on mileage and engine size.

Simon Empson, managing director of Broadspeed.com, said the deal could be put together only if the terms of the service plan were viable.

Negotiations with dealers and manufacturers were ongoing and so Empson was unable to reveal full details of the offer, but it is believed it will involve a single brand.

Empson said: “I can do it – it is whether I can promote it. We have dealers who want to do it, but we have to wait for the manufacturers to give it the green light. 

“The manufacturers will not agree to any marketing scheme which they view as distressing their product. However, there is significant surplus with manufacturers which has to be sold soon as all the storage facilities are full. Cars will have to be sold at half price or whatever can be achieved.”

A spokesman for the Society of Motor Manufacturers and Traders said: “The offer shows just how hard the industry is working to stimulate demand.”