Hi recently my check engine light has come on and I've noticed my car missing now

 

Do I need to replace my plugs and coils

 

Check this out

https://www.chevyhhr.net/forums/how-...-light-52828/?

 

Ok sounds like a good way to start. I'll definitely go to check the codes and see what comes up

 

I can't see my car. Should get new car or walk out to the driveway?

Sorry!

 

Welcome to the site, let us know which code comes up, we'll advise you from there

 

WOW, what a lack of basic information you have here.
What year is your HHR
Which engine
What model
How many miles are on it
Have you owned it since new or was it used when you got it
Its the small things.
If you do not own a OBII code reader I would strongly suggest you get one they are not that expensive. If you go to an auto parts store to have them read for you get the actual code not just the teckno babble the tech gives you.

Post the code here, or search the code here. There are a lot of tech savvy folks here who can help guide you with a code.

 

Yes check for codes first.
A miss can be caused by various things.
If you do have a miss and it's one cylinder it won't be necessary to change all the plugs/coils. If there is high mileage I would replace all 4 plugs because of that.
If you are handy this is a guide to do it:

| Repair Guides | Distributorless Ignition System | Ignition Coil Pack | AutoZone.com