I'm averaging 55MPG per tank on my 116D (18 months old) which I consider poor when the advertised was 68MPG combined.
Also having the same cold start juddering... and wondering how worried I should be after @ovekvam 's comment
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Current: 2014 F21 M135i Estoril Blue
Previously: 2012 F21 116D M Sport Estoril Blue
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