My Mazda 2 2015 85,000Km is runnings really rough especially when first starting the car in the morning(I live in Brisbane so not cold). It’s like running rough when the choke is on then settles a little more when has warmed up a little but the blue engine light is still on.
when the engine is fully warm then when driving you can tell whilst at the light and stopped and in idle it’s not running 100% but has never stalled.
the engine light has come on at times but then turns off after a few days.

i have had the spark plugs replaced but Did not solve the problem.

any advice would be appreciated.

Neil.

 

I would recommend taking it to Mazda. These had known idle issues. Something about carbon on the valves & weak valve springs from memory.