Skip advert
Advertisement

Goodbye 40 TDI: Audi drops the numbered engine names that confused us all

Audi is set to remove the powertrain naming strategy from the back of its cars

Audi 40 TDI badge

Audi is set to ditch its current powertrain naming strategy, which will see an end to a system which uses numbers that are vaguely associated with power outputs. 

First introduced in 2017, the number strategy will be dispensed with altogether starting with the all new Q6 e-tron SUV. The phase-in process for the number removal started quietly with the launch of the Q8 e-tron, but while the brand’s flagship electric SUV doesn't display numbers on its boot lid, the designations are still noted in pricing and press materials. 

Advertisement - Article continues below

Florian Hauser, Audi’s Head of Sales & Product Marketing for Battery Electric Vehicles, explained to Auto Express that a big focus for the brand going forward is to make things easy for its customers. “When we talk about simplicity we don’t just talk about the options and the configuration process [in contrast to older Audi models, the Q6 has just a handful of option packs to choose from], we are really thinking of getting the leanest engine programme for the Q6 which still refers to our customer demands.” 

With fewer powertrains to choose from, Audi will be able to simplify the naming structure of its range based on the number of driven wheels and a choice of one or two power outputs, with a regular four-wheel drive version of the Q6 simply known as ‘quattro’ going forward. 

“And if it’s a performance model with quattro, then it’s ‘SQ6.’” says Hauser. “If you think about what’s coming next, when we talk about rear-wheel drive it’s just a Q6. For smaller and bigger batteries we could think about a suffix behind the ‘6’ - for example ‘Performance.’ And so we don’t need the numbers anymore, so we won’t show them.” 

While it’s confirmed that subsequent EVs going forward will ditch the numbering strategy, the system is also set to be removed from the bootlids of its internal combustion cars too – though it’s still in discussion internally as to whether it will also disappear from the configuration pages.

Audi’s numbering structure was designed to separate powertrains according to their power outputs, but the inconsistent groupings – and the seemingly arbitrary choices of the numbers themselves – made the system confusing for many people. For example, the ‘30’ powertrain represented cars producing between 109bhp and 128bhp, but ‘45’ ran from 226bhp to 248bhp.

Are you pleased Audi's is dropping its confusing naming strategy? Let us know your thoughts in the comments section...

Skip advert
Advertisement
Chief reviewer

Alex joined Auto Express as staff writer in early 2018, helping out with news, drives, features, and the occasional sports report. His current role of Chief reviewer sees him head up our road test team, which gives readers the full lowdown on our comparison tests.

Skip advert
Advertisement

Recommended

Used Audi Quattro (Mk1, 1980-1991) buyer’s guide: an iconic and historic coupe
Audi Quattro - front cornering

Used Audi Quattro (Mk1, 1980-1991) buyer’s guide: an iconic and historic coupe

The Quattro rocked the world in 1980 when it proved that four-wheel wasn’t just for mud-plugging. It’s still great, but choose carefully
Used car tests
30 Aug 2026
New Audi Q9 on sale with UK prices and specs revealed
Ellis Hyde with the Audi Q9

New Audi Q9 on sale with UK prices and specs revealed

Audi wanted its new luxury flagship to make a statement wherever it goes, and that it will
News
26 Aug 2026
Rivian help to bring big change for future VW, Audi and Porsche EVs
Porsche Taycan - front cornering

Rivian help to bring big change for future VW, Audi and Porsche EVs

The boss of US firm Rivian tells us how his company is working with the VW Group to deliver a new generation of advanced electric cars
News
21 Aug 2026
Goodwood Festival of Speed 2026: Your guide to all the key cars
Goodwood 2026

Goodwood Festival of Speed 2026: Your guide to all the key cars

2026’s Goodwood Festival of Speed was an exceptional celebration of cars from the past, present and future! These were the top reveals and star cars…
News
13 Jul 2026

Most Popular

New Dacia Sandero is going EV, but there's still a place for petrol
Dacia Sandero render (watermarked) - front

New Dacia Sandero is going EV, but there's still a place for petrol

Next-generation supermini will provide a range of powertrains and a more rugged Stepway version
News
31 Aug 2026
Last chance: Gov asks for driver’s view on controversial car emissions law changes
Emissions checks

Last chance: Gov asks for driver’s view on controversial car emissions law changes

New proposals could see drivers face fines of up to £1,000 if their car’s emissions don’t match the approved emissions standard
News
1 Sep 2026
Luxury electric SUVs aren’t selling, and I know the reason why
Opinion - Lotus Eletre

Luxury electric SUVs aren’t selling, and I know the reason why

Deputy editor Richard Ingram thinks luxury SUVs are better suited to PHEV and range-extender tech than pure electric power
News
2 Sep 2026

Find a car with the experts