I had this installed in my 2020 Jetta RLine. It works really well. I gained more noticeable horsepower and only lost one MPG. Once it is plugged in, it takes 250 miles to learn your habits. I don’t drive conservative, so it made my computer change and my car was faster. If Bette mpg is your goal, than drive conservatively, and it will show gain. Obviously if you ever disconnect the battery,
You will have to start over with the 250 miles to retrain your computer. Highly recommend Thornton for any car. I bought a 2024 GLI and it won’t work with it, that is why I am selling it.
Volkswagen Performance Chips From Thorton Chip Tuning are a plug and drive solution to add more power and increase the performance of your Volkswagen engine without making any permanent modifications. They can be used on stock or performance enhanced vehicles.

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