TSI, T-GDi and other engine badges

These are carmakers' names for their engines, not separate technologies. TSI, on Volkswagen and Skoda cars, stands for turbocharged stratified injection: a turbocharged petrol engine with direct injection. Hyundai and Kia's T-GDi is the same idea, a turbocharged petrol engine with direct injection (GDi).

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Often mixed up with

• Turbocharged engine (turbo petrol)
• Direct injection (GDI)

Checked against this source on 18 Sep 2026. Every term