I was cross shopping a Corolla and regular Prius. I actually ended up getting a 2018 Prime for a net effective price of $15690. So it was a no brainer for me. There literally was no hybrid premium.
The local press just advised that at the international release of the LEXUS UX "... "I think everybody's preconception of the hybrid with Lexus has always been about fuel efficiency ..." BUT "... have the performance and sporty advantages that the hybrid technology can offer ... "a hybrid-petrol engine powers the most performance-focused mode". No performance or fuel or CO2 figures were quoted, so it's still conjecture. So it might be super fast, but not super-economical after all? There have been several "hybrids" I've pricked up my ears when I heard about them - but then read about startling 0-100 (km/hr) figures and quite lack-lustre fuel efficiencies. They call them Performance Hybrids or similar. LaFerrari quotes 14.2l/100km - but that's a different class altogether.
The U.S. press release states: "The UX 250h combines an Atkinson Cycle version of the 2.0-liter gas engine found in the UX 200 with a hybrid system for a projected output of 176 total system horsepower, and estimated 38 combined MPG." That's about 6.19 l/100km. (I wish we would do gallons per 100 miles here. Oh well.)
That appears to be the same engine as the one in the Corolla Hybrid in Europe. Now we can compare mpg between car and SUV with the same engine.
6.19 l/100km - that's acutally quite poor for what is a small SUV. The PETROL Mazda CX-3 is rated at 6.3l/100 average. TOYOTA C-HR is 6.4 (6.3 Manual)
Are you comparing it with the US EPA testing method? Here, the Mazda CX-3 FWD Automatic 2.0L is 8.3/6.9 (7.7L/100km average) CX-3 AWD Automatic 2.0L is 8.6/7.4 (8.1L/100km average) CH-R FWD Automatic 2.0L is rated at 8.7/7.5 (8.2L/100km average) So using the same testing method, it's significantly better.
No - was using Australian - didn't realise USA differed so much these days. There is a push from some advocates to get Australia to change their testing to "realistic". Which I don't understand, totally. So what do they do? - drive like a Motoring Journalist - who can easily use double the fuel a conservative motorist uses. Drive a Twin Cab Truck with a 3.5 tonne caravan behind it and 6 weeks of camping provisions in the tray - or drive it EMPTY? Over 60,000km I bettered the Official Test on my FIESTA Diesel, and almost equalled it with my FOCUS Diesel. But - with my PRIUS, I'm nowhere near it (4.2 actual vs 3.4 official). And, if anything, I'm driving the PRIUS more for economy, but a similar commute to the other 2.
In 2008, the EPA changed its testing method from a 2-test to a 5-test method that included A/C use, cold start and a higher top speed (135km/h) and higher average speed (nearly 100km/h as opposed to 70km/h before). In 2014, Canada adopted the EPA test methods (prior to that, we were similar to the European NEDC tests) In 2017, the EPA updated its "roll down" test method (where the car is allowed to roll in neutral to determine friction and resistance from the tires, transmission and other internals). The WLTP should be closer to the EPA and I think that's coming in by Sept 2019?? Your 4.2L/100km is closer to the 4.5L/100km combined that is rated for the Prius in Canada and the US.
Apparently, our testing regime is based on the EURO tests. And as EURO is changing theirs, I assume we'll follow theirs. Maybe.