After more than 50 rentals, my grandpa and grandma have noticed that Enterprise CarShare's cars match manufacturer's advertised fuel economies, but Enterprise Rent-A-Car's are much lower:
As an example:
- a CarShare's Kia Soul yielded 4-6 L/100 km, but
- the same vehicle with Rent-A-Car's yielded 13-15 L/100 km!
They suspect that as CarShare (a car-sharing company) pays for gasoline, it cleans and services their cars better than Rent-A-Car, which requires renters to pay for gasoline and so has less incentive to keep cars fuel-efficient.
They drive identically on CarShare's and Rent-A-Car's cars. If anything, they'd expect worse fuel efficiency for CarShare's cars especially in the winter when they use the car heater.
Is there any evidence for our suspicion? Has anyone experienced this difference?
If our suspicion is true, then please see the question in the title. Starting with a fuel-efficient car is easier than requesting compensation after the trip.