 The conversion did, however, significantly change the 'class-leading' warranty terms, the general warranty being reduced from 150,000 miles to 60,000 miles.The Rover V8 remained available in detuned 3.5L form (sourced from Land Rover) producing 135hp and was a common sight on the road as an ambulance with coachwork by the 'Universal Vehicle Group', this was due to be upgraded to a 3.7L unit; however, issues with the brakes meant that never materialised.These ambulances were fitted with a limited-slip differential to improve handling, but were notorious for poor fuel economy, which was described as 'shocking' by experts, who said the engine was 'drinking fuel like a fish', with imperial miles per gallon readings rarely reaching double figures while in town (even when not on call).