Just changed the ignition coils. Fixed it!! I recommend getting BOSCH or an OEM equivalent brand.
Denso is what I run and never a problem.
my issue was the same which ended up being coils and hpfp
since you changed the coils ( Bosch is best ) I would look at the fuel next.
When you buy on Amazon, make sure you buy directly from the manufacturer. You are right. A bosch ignition coil costs $34 at the official bosch store in amazon, while it costs $60 at advanced auto parts.
Truly you can’t get anything but the Denso coils. There’s no money buying and installing twice.
Have to use Denso coil packs. All the cheap ones are crap.
I replaced all the spark plugs as well as the four ignition coils (new Bosch coils). After repair, the car runs perfectly and I no longer have any hiccups while driving.
Found another store and borrowed vehicle to get a Bosch. Swapped out the carquest one and SEEMED FIXED AGAIN…same thing, ran good for about 5 miles and went back to same symptoms.
Probably the coils. The Bosch coils I’ve used in the past on my 330Ci (same coils) lasted maybe 20K. Delphi are much better.
Stick with the stock Delphi’s. I went with Bosch recently and half of them died within a day (N55). FCP swapped them out, no questions asked, but still a PITA to do the work multiple times.
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If choosing ignition coil across many manufacturers, check the part ranking. If your choice is down to two brands, the PartReview part comparisons help.
We compare ignition coil across these categories:
In March 2026 on PartReview, ignition coil Denso and Bosch were roughly equal.
In March 2026 on PartReview, ignition coil Bosch were overall more popular than Denso.
By vote balance, ignition coil Bosch surpassed Denso:
By number of reviews, ignition coil Bosch surpassed Denso:
In March 2026, according to PartReview, these manufacturers led the same number of car-specific ratings:
Bosch are chosen by owners of cars such as: Volkswagen Jetta, Volkswagen Tiguan, and others.
Denso are chosen by owners of cars such as: Honda Fit, Volkswagen Passat, and others.
If this comparison didn’t fully answer your question, there are many others on PartReview.
For example, comparisons of ignition coil Bosch with: DELPHI, MSD, NGK, APR, HITACHI, OEM Volkswagen, BERU, Bremi, Duralast, OEM Audi.
Also available: comparisons of ignition coil Denso with: DELPHI, MSD, NGK, APR, HITACHI, OEM Volkswagen, BERU, Bremi, Duralast, OEM Audi.
You can also see who is better among other ignition coil manufacturers: Bosch or DELPHI, Bosch or MSD, Bosch or NGK, Bosch or APR, Bosch or HITACHI.
