This paper presents the results of tests on a hybrid petrol-electric vehicle with external additional charging of the electric battery (a so-called "PHEV" solution). The tests were primarily intended to measure energy consumption, but vehicle speed was also recorded. The tests were conducted on test routes representing urban and rural driving. The tests were conducted for various vehicle control strategies. The hybrid drive and controlled battery charging strategies were implemented for zero and full initial battery charge. Additional tests were conducted in "sport" mode to achieve the highest power output. The tests were conducted with various measurement systems: based on measurements from the fuel dispenser, the on-board computer, the MyBMW application, and the external EOBD interface. It was found that there were no significant differences in the measurement results between the systems used. The results showed that the sensitivity of average speed measurements to the control strategy for all test route stages was on the order of 6–16%. The sensitivity of average volumetric fuel consumption measurements to the control strategy for all test route stages was on the order of 4–80%. Whereas the sensitivity of the average speed measurement results to test route stages for all control strategies was on the order of (33–53)%. The sensitivity of average volumetric fuel consumption measurements to test route stages across all control strategies was on the order of 19–60%.