Don't be surprised if they ask you to change Fuel Octane or Brand. My friend who has a Mini Cooper S has the hesitation and idle issue as well and Dealer adviced them to put in lower Octane gas which he didn't follow, instead switched to Shell 93 and all is good.

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TQ2K


'04 N62 - Alpine White/Truffle
'03 S62 - Petrol Mica/Champagne
'97 S52/4/5 - Alpine White/Dove
'91 M42/4/5 - Brilliantrot/Tan