I have a 2016 VW GTI w/ Perf Package, full bolt ons, COBB custom tune by Stratified, and Cobb DSG Tune, as well as a 2017 Fiesta ST.
Zero probs with the GTI 49K miles, except a recall or two. Flawless. Tune on the E888 engine is bonkers! Ridiculous power from a simple Tune. Drives super smooth and fast AF! Only problem I have is...getting power to the ground even with the LSD.
With the LSD, springs, big brakes, rear sways, and super light rims, it handles better than the FiST. Drove same roads, back to back to back. Keep in mind though that my FiST is still stock, besides Swift springs and camber bolts.
GTI is faster, handles better, much nicer inside, and gets better gas mileage. I say all of this, BUT I like the FiST better! If I had to choose to keep only one, the FiST would be the lone survivor. Why???? Because of the Rawness of the ST, the way it communicates with me more, and the way it makes me feel more involved with what's going on. Fun factor the FiST wins, but all around fast and fun car, the GTI all the way.
To answer ur original question, GTI is reliable enough, and shouldn't be the determining factor of whether to get it or not. Both cars are awesome for what they are.
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