I extended my Sportage to 5 years as financially couldn’t afford to change. My 5 years up in February and no suv within the bracket ap I want to pay and can’t even get a Sportage on the scheme at the moment so I wish I could keep my car longer but will have to change. So I think if happy with the car and your in no hurry just extend as there will probably be something in 2 years time and possibly shorter lead times.