Is an engine flush necessary for a year old car?

I have a year old SEAT Ibiza coming up for its first service, with 6500 miles completed. The SEAT garage have asked if I would like an engine flush as it 'improves mpg etc'. I am of the opinion that one is not required. What are your thoughts, please?

Asked on 6 November 2017 by hati

Answered by Honest John
A fuel system flush, yes. Then start using super instead of ordinary petrol so you won't ever need one again. An oil flush isn't necessary and could even be harmful at a first service.
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