DPF and fuel consumption

I had a DPF filter regeneration last week at an authorised dealer garage and I have noticed increase of fuel consumption from around 11 l/100 miles to 17 l/100 miles. Is that normal? If not what they could have done wrong?

Asked on 21 June 2015 by dariusm

Answered by Honest John
This reads as if regeneration is taking place continuously and that's what's burning the fuel.
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