Volkswagen Fuel Additive 90ml

I got this for my 2013 Q5 3.0t as I like to run a fuel system cleaner while doing long road trips at least once a year. First off the bottle make it super easy to add to the fuel tank. In the past I've used BG 44K Fuel System Cleaner which works good, but it's a pain to add to the tank. I will say this VW cleaner really does smooth out the idle as well when using it, there wasn't a negative impact in fuel economy. It will be my go to yearly fuel system cleaner.

Bought because I saw a TSB for my 2010 vw beetle that said the fuel injectors get clogged up over time due to sub-premium gas dispensed at a lot of gas stations. My beetle was throwing a lean fuel code. Put just one of these in a full tank of gas, drove it in sport mode as instructed by the bulletin, and my check engine light shut itself off. Vehicle runs great!

Taking proactive measures to keep my engine running clean.

In my 2018 Tiguan (8 sp automatic). Got 36.5 mpg on 8 hour hwy trip instead of usual 33mpg or so. Drive 73 to 78 mph. Pretty cool. Seems to run smoother too.

Tried it and didn't help out my 09 Audi Q5. Maybe good as a preventative, but once you have carbon build up its pointless.

I used this for 6 consecutive fill ups on our VW 2.0 TSI engine, (50K miles), 1/3 of the bottle for each fill up.The "Misfire" codes cleared ,and the engine is running better after using 2 bottles.It was recommended by our VW Dealer, prior to spending $1,000 on a manual Intake manifold/valve cleaning/service.I'm not fully convinced that it is effective at cleaning the intake manifold/valves, but I did get results.

Used this product in my 2016 Audi A7 due to frequent misfire codes as others have noted. Replaced a plug and coil in the affected cylinder to the tune of $175 and thought all was good but then threw same code again about a month later. Likely the problem was a dirty injector. Put 1 bottle in tank, filled with a good 93 octane gas, and gave it a long hard run. Absolutely no problem since. Even though a bit pricey, this stuff is a cheap fix compared to the alternatives.

My 2011 VW Tiguan was throwing frequent error codes for cold start misfires recently. Was about to do the de-carbon cleaning but gave this a try first. One full bottle into the tank at fill-up. Took a 70 mile ride on the freeway afterward. Since then (several weeks), idle at startup is smooth, low speed acceleration is quicker, and so far the misfire codes at cold startup have vanished! My car has low mileage (mostly city driving) at 40K miles.