mazda3 rpm needle moves on idle

[robbor]

https://www.youtube.com/watch?v=ssSpC4LWHGk&fe...

is this normal? I usually have my radio on but was in a rush today and noticed on idle, my car seemed a bit vibrating and the rpm needle would bounce a little as seen in the video

[anonymous-user]

It twitched, nothing to worry about in my book.

[robbor]

but when it twitches, the car vibrates which is my worry.

[p4cks]

Often happens when it's cold

[robbor]

turns out I have a misfire, payed mechanic to have a look and see why. how much do you guys think it could cost to fix?

[p4cks]

What engine is it?

[robbor]

1.4 if thats what you mean? it's a mazda3 1.4 ts

[p4cks]

If it’s a petrol is likely to be a coil pack or plug leads which should be a relatively cheap fix

[robbor]

just had a call mechanic says pencil coil has broke, will cost £90 to sort out