Don't replace ignition coils until one or more gives out, then I would look into replacing them all with Hitachi E ignition coils (bolt-downs).
Pros: Hitachi E ignition coils
Reviews of HITACHI parts For Business
Average Rating
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The manufacturer's average rating is calculated based on ratings of all its spare parts. It determines the place in the manufacturer ranking
3.2
Manufacturer Ranking
#166
36
Spare Parts
8
Country
Japan
Website
hitachi-autoparts.co.jp
Spare Parts
Comparisons
To make a story short, and have a happy ending like me , just buy the 1.8 T coilpack (coil-on-plug x 4) manufactured by Hitachi (Japan). They have the top of the plug filled with some ceramic epoxy-like stuff that seems really sturdy and heatproof. I bought them at ECSTuning.com over a year ago, and they haven't failed not even once.
Pros: sturdy and heatproof
Cons: OEMs sucked big time
best ignition coils ever. i've been through two other OEM revisions before finally getting the Hitachi bolt-downs from ECS.. and i've been misfire free for about 6 months now!
Pros: misfire free
just put hitachi's in my aww. literally 2 miles after i got it chipped, #2 and 3 blew out the older styled black ones that were in there. no problems with the hitachi's yet
Pros: no problems yet
Mileage: 3 km
Stick with the Hitachi coils. I only had one fail in 80K miles on my car and 40k of that is BT.
Pros: one fail in 80K miles
Mileage: 128747 km
I had the snap in Bremi coils in my 2001 AWW and I replaced them with the Hitachi coils. It smoothed out my idle quite a bit.
Pros: smoothed out idle
Vehicle:
Volkswagen
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