HBC350

Anyone else experience a bit of a lopey idle at times? Not as smooth as you'd expect? My 6K mile 507 bounces around a bit at idle when warmed up (no check engine light) and I'm wondering if it's just the nature of the beast.

ld63

I'm at 10K miles on a 2014 507 and haven't noticed any rough idle issues.

I've had the 'lifter clicking' noise a couple times after cold start idle and it goes away once the car is warmed up.

rickclass

even the C63 gets a little grumpy.., it lets you know what's lurking under the hood....perfectly normal

ENVē

My 2012 P31 does this too. It doesnt feel right but people say if no CEL must be normal. I feel like the C63 motors just sound and run like tractor motors at idle. I mean I felt like these were misfires.

odonnks

6,000 miles here and I've not experienced what I'd call a rough idle.

ENVē

Is the car perfectly smooth at idle? Do you feel any of the motors movements or combustions? through the brake pedal? like a slight knock?

odonnks

Yes, it's very smooth at idle. No movement or pulses felt through the brake.