The TT RS 8J has the first, iron-block version (CEPA), shared with the RS3 8P; its parts mostly don't fit the later aluminium-block EVO engine. Both RS3 generations and the Formentor VZ5 on this site use the 2.5 TFSI five-cylinder; the VZ5 shares the RS3 8Y's locked engine computer but has a smaller intercooler setup. See each guide for which parts and files fit which car.
Power by stage, car by car
| Car | Years | Stock | Stage 1 | Stage 2 | Stage 3 | Stage 4 |
|---|---|---|---|---|---|---|
| Audi TT RS 8J | 2009–2014 | 340–360 PS | 380–420 PS / hp | 419–454 PS / hp | 468–550 hp / PS | 600–800+ PS / hp |
| Audi TT RS 8S | 2016–2023 | 400 PS | 440–505 hp / PS | 500–554 hp / PS | 578–650 hp / PS | 650–1,000+ hp / PS |
| Audi RS3 8V | 2015–2020 | 394 hp | 459–542 hp | 499–574 hp | 700+ hp | 800+ hp |
| Audi RS3 8Y | 2021– | 401 hp | 446–561 hp | 467–565 hp | 585–613 hp | 650–800+ hp |
| Cupra Formentor VZ5 | 2021– | 390 PS | 446–506 PS / hp | 467–542 PS / hp | 560–620 PS / hp | 650–707 PS |
Figures are the tuners' own claims from each guide, on the fuel each tuner states.