This 2010 Mercedes-Benz C-Class with a 2.1-litre diesel engine came in for ECU software work and a power increase. The stated original figures were 170 hp and 400 Nm.

After changes to the emissions system, but before the power calibration, the dyno showed 225 hp and 458 Nm. This intermediate run provided a reference point before the next software stage.

After the ECU was remapped, the dyno recorded approximately 240 hp and 530 Nm. The video shows the stated original figures, a separate measurement after the emissions-system changes, and the final test after power tuning.