I'd like to see the ratio of hours with AC on vs off fleet-wide after the first year.
From a 2019 IEA report:
"Estimates from the literature reveal that around 6% of the annual global energy consumed by cars is used for MAC(mobile air conditioning), varying by country between about 3% and 20% depending on climate, driving patterns and traffic congestion. It can peak at over 40% in warm climates and congested traffic. This equates to around 1.2 Mboe/d consumed by MAC units in cars alone, with other road vehicles adding another 0.6 Mboe/d. For electric vehicles, MAC can reduce driving range by up to 50% on hot and humid days."
> "14.7 miles per gallon (mpg) (without air conditioning) 8.6 mpg (with air conditioning)"
Both of those are absolutely embarrassing, did they use a 1950s Soviet tank engine? According to a quick Google search, a Ford Transit (bigger sized but not optimised for post delivery van) gets 33-46 mpg depending on the engine.
Yeah, a post vehicle will start/stop much more, but that's where start/stop tech, and maybe even hybrid come in.
"14.7 miles per gallon (mpg) (without air conditioning) 8.6 mpg (with air conditioning)"
The same document estimates off the shelf commercial right hand drive vehicles averaging 6.3 mpg if used fleet-wide.