How is it a "vast improvement in every respect". Just interested as apart from a few cosmetic bits on the outside an extra 10hp and digital clocks inside what else has been improved?
Bear in mind that I am comparing a 2016 GTI DSG with a 2019 GTI Performance DSG, which was one of the OP’s options.
Engine: Going from 220 bhp to 245 bhp, more than a 10% increase.
Gearbox: The much newer design of the 7 speed DSG means that the occasional clunkiness of the 6 speed has gone. The smaller gaps between ratios makes changes much smoother.
Brakes: The bigger discs, ventilated on the rear, feel usefully more powerful, while being very smooth in operation, with none of the grab you sometimes get with new brakes.
Lights: I thought the Xenons on the ‘16 car were good, but these LED’s are amazing. The spread of light is even and powerful. Adaptive high beam seems to work, but I’ve yet to try it out fully. The new DRL/indicator set up looks great. The new tail light assembly also looks great and now has reversing lights that help you see at night!
The Instruments: I love the digital dash. It can display so much information in a very useable way. Also, with the Nav screen on the dash, I can use Waze on the centre screen. Best of both!
The Exhaust: The car now sounds a bit more like a sports hatch. Just that bit louder and with a harsher edge to it.
Security: Switchable keyless entry is a comfort.
Front Radar Sensor: Much safer position, behind the VW badge. A partridge cost me over £400 for realignment on the ‘16 car!
Appearance: The new front bumper/grille assembly, together with the new lights, front and rear and bigger exhaust pipes, have freshened the design up nicely. Overall, the best iteration of the Mk7/Mk7.5 model in my opinion.
Overall: The car seems more refined in use, an example being very smooth operation of the autohold. There is none of the slight grab on stopping or starting that I had with the ‘16 car. Of course, this could be down to fortunate assembly of my car, or VW may have settled on the optimal adjustment.
Maybe “vast” was a bit of an over statement, but the improvements are very worthwhile. I am very pleased with my new car. 😊