Decided to change spark plugs in my 2000 Intrepid after 100,000 miles. Decided to put what I thought would be really good plugs. Installed Bosch Plarinum+4 plugs..Car now runs rough at idle and my gas mileage has dropped by 3 mph..Anyone had similar experience? I guess I am going to go to the trouble of removing them and getting my money back..

Bosch Plugs in Chrysler products equals trouble.You threw your money away,throw them Bosch plugs in the garbage can and put in Champions.Champion spark plugs are only recomended by Chrysler.I seen nothing but problems with Bosch plugs in Chrysler products,run like crap.

I bought Champions today and will pull the Bosch out tomorrow and get a refund..........Never another Bosch plug for me in anything I own..Never, never, ever another Bosch plug....