N18 engine start-up noise/shudder

[Mr Peel]

My 2012, 55k Countryman Cooper S has always run faultlessly, although it does use a bit of oil. But now something sounds/feels not right on start-up, especially from cold.

It sort of shudders as it fires up. Generally seems fine after that. My local MINI indy said he didn't know what it was and not to worry. But you can hear it clearly and feel it too. Anyone know what this might be? Thanks

[Mr Peel]

It's a petrol mate. No codes showed when my indy plugged it in. Maybe I'm over-thinking it?

[Mr Peel]

Thanks for that. It is still doing it, and sounding worse than it was. I have heard tales of the high-pressure fuel pumps going on these. Time for another chat with my garage...

[Mr Peel]

Update in case it helps anyone: it was the high-pressure fuel pump. And that means a bill of about £1k at a Mini indy...

The slight clicking noise on start-up got louder over several weeks. Then it developed cold-starting problems, revving unevenly for about 30 seconds and throwing a fault code (restricted power). Much worse if you left it unused for two or three days. Slight occasional misfires too.

[Mr Peel]

I had it done. Thanks though: tip might help someone else.

[Mr Peel]

Update on this as it might help others. Replacing the high-pressure fuel pump sorted out the rough running and fault codes, but not the feeling of the drivetrain shuddering on start up. Months later it's still doing it, but hasn't got any worse.

Mechanic now suspects it's the dual-mass flywheel. When it eventually goes that's a £1,700 bill to replace it and the clutch. Does this sound plausible? And why do so many Minis need clutches at relatively low mileages (mine's only on 60k)?