Breaking news

WEC

LM Hypercar rules amended to converge with new LMDh regs

The rules for the LM Hypercar FIA World Endurance Championship category have been brought into line with the new LMDh regulations due to come into force one season later.

Gary Watkins

Gary Watkins

Edited: May 12, 2020, 1:22 AM

Copy link

Share on Facebook

Share on Twitter

Share on WhatsApp

Share on Linkedin

Share on Pinterest

Share on Viber

Add as a preferred source

Toyota Gazoo Racing Hypercar rendering

Maximum power output and minimum car weight for LMH machinery has been reduced to the same levels as LMDh prototypes, while the aerodynamic performance has also been equated. The move is designed to ensure that the two types of car have similar performance characteristics, as well as reducing costs in LMH. 

The maximum powertrain output has been brought down from 585kW or 785bhp to 500kW or 670bhp for LMH and the weight limit from 1100kg to 1030kg, the same figures announced for the LMP2-based LMDh class last week. The changes have been agreed by the FIA's Endurance Commission and are still subject to ratification by the World Motor Sport Council. 

Pierre Fillon, president of WEC promoter the Automobile Club de l'Ouest, said: “LMDh and LMH will be governed by convergent regulations to ensure similar performance characteristics. The technical teams at the FIA and the ACO have worked hard to adapt the LMH regulations and the result has been warmly welcomed by manufacturers. 

“We must be proactive to build the future of endurance [racing]: this announcement is further evidence of the constructive collaboration that is crucial to our discipline.”

Read Also:

Peugeot, which has yet to decide in which category it will make its return to sportscar racing in 2022, has lobbied for what was its motorsport boss Jean-Marc Finot described as “perfect equity” between the two rulesets. 

One significant performance differentiator remains in the regulations: a LMH car can run a front-axle energy retrieval system, whereas all LMDh machinery will have a single-spec system on the rear wheels. It remains unclear if the so-called '120 rule', which would have prohibited deployment of hybrid power through the front axle at speeds lower than 120km/h (75mph), will be retained in the regulations. 

It was a condition laid down by Aston Martin ahead of its announcement last year that it would join the WEC with a non-hybrid racing version of its Valkyrie road car. It subsequently put its plans to go for outright victory in the WEC on ice in February, citing the uncertainty caused by the LMDh news.

The LMDh class has been conceived to allow the same cars to contend for outright honours in both the WEC and the IMSA WeatherTech SportsCar Championship.

We want your opinion!

What would you like to see on Motorsport.com?

Take our 5 minute survey.

- The Motorsport.com Team

Read and post comments

Read also :

Share Or Save This Story

Copy link

Share on Facebook

Share on Twitter

Share on WhatsApp

Share on Linkedin

Share on Pinterest

Share on Viber

Previous article WEC teams call for reduced 2021 calendar

Next article Corvette withdraws from 2020 Le Mans 24 Hours

Top Comments

There are no comments at the moment. Would you like to write one?

View More & Comment

More from

Gary Watkins



A fond farewell to a few WEC favourites

WEC

Monza

A fond farewell to a few WEC favourites



How Cadillac triumphed in the WEC Monza 6 Hours without the fastest car

WEC

Monza

How Cadillac triumphed in the WEC Monza 6 Hours without the fastest car



WEC Monza: Antonio Fuoco takes pole for Ferrari

WEC

WEC

Monza

7 d

WEC Monza: Antonio Fuoco takes pole for Ferrari

Latest news



BMW "proud of what we achieved" after securing runner-up in 2026 WEC

WEC

WEC WEC

Monza

50 min

BMW "proud of what we achieved" after securing runner-up in 2026 WEC



The numbers that reveal how sprint races have turned the MotoGP title fight upside down

MotoGP

MGP MotoGP

Qatar GP

2 h

The numbers that reveal how sprint races have turned the MotoGP title fight upside down



2027 Formula E drivers and teams: The line-up so far

Formula E

FE Formula E 4 h

2027 Formula E drivers and teams: The line-up so far



Kimi Antonelli meets Italian president Sergio Mattarella

Formula 1

F1 Formula 1 5 h

Kimi Antonelli meets Italian president Sergio Mattarella

Feature

Discover prime content



A fond farewell to a few WEC favourites

WEC

Monza

By Gary Watkins

A fond farewell to a few WEC favourites



How Cadillac triumphed in the WEC Monza 6 Hours without the fastest car

WEC

Monza

By Gary Watkins

How Cadillac triumphed in the WEC Monza 6 Hours without the fastest car



Why Toyota’s 2026 WEC triumphs have put it into the all-time greatest endurance racing team debate

WEC

Barcelona

By Gary Watkins

Why Toyota’s 2026 WEC triumphs have put it into the all-time greatest endurance racing team debate



How Toyota destroyed the competition to seal the WEC crowns

WEC

Barcelona

By Gary Watkins

How Toyota destroyed the competition to seal the WEC crowns

Subscribe and access Motorsport.com with your ad-blocker.

From Formula 1 to MotoGP we report straight from the paddock because we love our sport, just like you. In order to keep delivering our expert journalism, our website uses advertising. Still, we want to give you the opportunity to enjoy an ad-free and tracker-free website and to continue using your adblocker.

You have 2 options:

Subscribe now Already subscribed? Sign in here

Already disabled your adblocker?
Reload page

Manage Alerts

Subscribe