Spark plug Bosch or OEM Volkswagen

Sometimes you just have to try a few sets. I have a '97 Jetta which had NGK plugs in it for close to 4 years. I went through two sets of NGK plugs and couldn't get the car to run. I switched to Bosch and it started right up and ran fine.

Can't beat the 2.5 for hassle free reliability. Economy sucks, though. I have had my 130k mile 2.5 Rabbit since new and I have never averaged more than 25-26mpg in mixed driving, but on the other hand I haven't done much more than oil changes and spark plugs on it.

Since Iridium is tough, and there is platinum at the tip of the movable electrode, I bought Bosch Iridium.

Look out for tensioner. Somewhat large maintenance at 40k intervals. (DSG fluid and filter, haldex fluid). Oil changes every 5-10k. Spark plugs every 40k a good ideal imo as well.

use oem plugs for the next 40k, its worth it, part number is 06H-905-601-A

Bosch W7DTC plugs were the best, caint get them no mores, use NGK BP6ET plugs instead.

Been using bkr7e since 2007. They are ok, but not optimal in any way. Im now running Bosch F5DPOR. \"OEM Audi RS2\" They are gap free, and runs perfect at least at 15psi in my car.

Put the correct spark plugs in there (NGK BKUR6ET-10 for AEG), throw those Bosch +4 turds in the bin where they belong.

Bought Bosch platinum's and red bremi wires. swap everything all out, the misfires alot worse.

Personally I've never had any luck with ngk's in any of my vr's always just run Bosch plugs and wires....