Golf GTE, Formentor e-Hybrid, A3 40 TFSIe and the 1.5 eTSI: VW group hybrids can now be tuned

Plug-in and mild hybrid VW group cars have been the one part of the range we could not touch. The 1.4 TSI e-Hybrid in the Golf GTE and Formentor, and the 1.5 eTSI in the newer Golf, Octavia and Tiguan, sit on a Bosch MG1CS211 that no tool could read. From 2 July Autotuner reads and writes it on the bench after a mail-in unlock.

Cars this opens up

• Volkswagen Golf GTE and eHybrid (2020 to 2024), Passat GTE (2019 to 2023), Tiguan eHybrid (2021 to 2024), Arteon eHybrid (2020), Caddy, T-Cross, T-Roc, Taigo, Tayron and Transporter 1.5 eTSI (2021 to 2025)
• Audi A3 40 TFSIe and 45 TFSIe (2019 to 2024), Q3 45 TFSIe (2018 to 2025), A5 1.5 TFSI mild hybrid (2024)
• Cupra Formentor and Leon e-Hybrid (2020 to 2025), Terramar (2025); Seat Leon and Tarraco e-Hybrid
• Skoda Octavia iV (2020), Superb iV (2019 to 2023), Kodiaq (2023); Ford Tourneo Connect 1.5 eTSI (2021)

What it means

We tune the petrol engine side of the hybrid. The 1.4 TSI in the GTE makes 150 PS on its own and typically goes to around 185 PS on a Stage 1, with the electric motor adding what it always did, so the combined figure and the response both improve. The 1.5 eTSI gains a similar 35 to 40 PS. Battery, motor and charging are untouched.

Owners: put your registration into the tuning builder. Dealers: MG1CS211 reads are covered by the file service and the Autotuner is the tool that reads them.