: While many PHEVs boast official ratings upwards of 160 mpg , real-world data often shows averages closer to 47 mpg if the vehicle is not charged daily.

Scientific Research: Vicky Süβ at the Max Planck Institute (MPG)

Vicky Parrott, a prominent automotive journalist, has extensively covered the discrepancy between official fuel economy figures and real-world performance, particularly for plug-in hybrid electric vehicles (PHEVs). Her reports on CarGurus often address: