A 1991 Volkswagen Jetta with a 1.6-litre diesel engine was tested on the dyno. The car was not tuned; the aim was to find out how much power the older engine produced in its current condition.

The factory output is stated in the video as 70 hp. The run was performed in fourth gear, and the dyno recorded 74 hp. This is close to the factory figure, although a dyno reading is not a direct measurement of engine power at the crankshaft.

This was a condition check, not ECU programming or a power increase. The result applies to this Jetta and its technical condition at the time of testing.