Starting this fall, Audi will begin rolling out a new naming strategy for its vehicles that will see it switch from highlighting engine displacement to Tesla-like power output designations.

The Ingolstadt-based luxury car manufacturer says the decision was prompted by the rising popularity of electric and hybrid vehicles in which displacement-based names make little sense.

So, later this year, a redesigned Audi A8 will be the first car to use the new numerical designations, each of which will represent a range of power output.

Yeah, we think it’s weird too, so let us do our best to explain, starting with that new A8. When it goes on sale in the third quarter of this year, it will be offered with the same 3.0-litre gasoline and TDI diesel V6 engines it used before.

In Europe, the TDI model will be called the A8 50 TDI, because its horsepower rating falls between 278 and 304. Both in Europe and in North America, a 3.0-litre turbo gas V6 model will become the A8 55 TFSI.

Interestingly enough, Audi hasn’t actually laid out the exact parameters for that “55” badge, but the UK’s_ Autocar_ magazine speculates it will be used on cars with between 304 and 368 hp. Other model designators will include 30 (107 to 127 hp), 35 (145 to 159 hp), 40 (165 to 198 hp), 45 (223 to 244 hp), 60 (423 to 449 hp) and 70 (more than 529 hp).

Each number will be followed by the engine technology used in the particular car you’re looking at, including TFSI for conventional gas-powered cars, TDI for diesels, and e-tron for its electric models.

All new Audi models introduced in the next few months will adopt the new nomenclature, and the full line will wear the new badges by summer of 2018.