Fiat Chrysler Automobiles is the latest to offer up to £5,300 off a new model bought before the end of this month against a pre-2010 diesel or petrol model put in for scrapping.
There are 13 models in the Fiat, Alfa Romeo and Jeep ranges which can be purchased under the deal.
Volvo and London Taxi Company owner Geely of China is reportedly close to finalizing its acquisition of Lotus.
A formal announcement could be made at the German motor show this month and Lotus may be making a lightweight electric sports car after it engineered the first Tesla in 2008 and based on its own Elise two-seater.