Author Topic: 8.5 GTI - issues with fuel system, had the car 4 months  (Read 953 times)

Offline AbsoluteAnorak

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Took delivery of the new car in December. After 500 miles (and 1.5 tanks of fuel) the (yellow) check engine light came on. Reported to local VW dealer in January, and had to wait until Monday this week to get the car seen as they had no courtesy cars available. Picked the car up earlier today after having two new injectors installed, and drove the car home without any check engine light. Glorious.

The glory lasted no more than an hour  :cry: Did the school run at 3pm, started her up only to find the check engine light is on again. Immediately phoned the dealer, who said to bring the car back tomorrow. However ... they have no courtesy cars available until mid-late April. I'm pretty annoyed.

As I had to use the car throughout while waiting for a courtesy car (and VW confirmed the car was fine to drive in the meantime) I added 3000 miles to the car with the check engine light on. I can't say that performance had been noticeably affected, but clearly something isn't right.

Is this a common fault? Anybody else have similar issues? Reading around, others have said that regular visits to VW in the first year of ownership is quite common (and often related to fuel system issues) but I always take Reddit with a pinch of salt. I'm not 100% convinced, given this issue has returned immediately (well, within 20 miles) that this is injector related - although the check engine light did stay off the journey home today, so it doesn't make sense.

Offline JoeGTI

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Re: 8.5 GTI - issues with fuel system, had the car 4 months
« Reply #1 on: 19 March 2026, 16:31 »
While visits back to the dealer in the warranty period are not uncommon, I must say this "fuel system" issue is a new on one me. I don't recall reading reports of this one before and I've had 2 MK8-generation cars myself and neither have suffered it.

Vast majority of issues people have with these cars are more typically software-related. Reddit (from what I've seen) tends to be more USA-biased too.
MK8.5 GTI Clubsport. Moonstone grey. Queenstown 19’s. DCC. Harmon Kardon sound. Pano roof.

Offline Davey-c

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Re: 8.5 GTI - issues with fuel system, had the car 4 months
« Reply #2 on: 19 March 2026, 20:47 »
I had a Golf R 20 years which had this issue over 14 months of ownership. The car was in and out of VW about 6 times for this issue. They changed or replaced multiple components to try and rectify the issue, sensors, manifold, harnesses and a fuel cap. Absolutely spoiled ownership and I got rid of the car due to frustration. I’ve had plenty of Golfs over the years and this was the first one that ever gave me any hassle. Changed manufacturer and went with Merc in the end due to the worry of getting another Golf and the potential issues reported. Shame as the 20 years was a brilliant car to drive. Hopefully your issue gets resolved and you get to enjoy the car.🤞🏻
2023 Golf R 20 Years, Lapiz Blue, 19 Inch Black Estoril Alloys, Rear Camera, Harmon Kardon Sound System.