CLKINDIVIDUAL

So my car is a 500 haven't really drove it since last winter, maybe start it once a month drive it around the block a few times and park back in the garage. My issue is i had that same gas in my tank for like a year now until today i filled up cause there was one block left. So when i started up the car it turns off and on , kinda reving up and not. So i have to step on the gas for it to fully start with no problem. Is it cause the gas was too old and I topped it with new?

Fatz

If "driving it around the block a few times" isn't equal to 10 miles or more, there is a good chance your fuel lines and jets have deposits and are restricted.

You could put some Techron fuel system cleaner/additive in the tank and drive the car for 50-100 miles.

AMG_Adon

yea techron would def do the trick