Hardcore Toyota GR Supra could use BMW M ‘S58’ engine – report

July 12, 2019

It seems there might be a very small possibility that Toyota could install the BMW M 3.0-litre twin-turbo ‘S58’ engine into the GR Supra, as something of a hardcore TRD-like variant.

BMW M, which is pretty much a separate company to BMW, recently introduced an evolution of the S55 engine that’s used in the current M3 and M4, called the S58. It debuted in the new X3 M and X4 M SUVs, offering up an impressive 375kW and 600Nm.

Seen as though the GR Supra already comes with a BMW inline six, called the B48, it seems logical that the S58 could technically fit in the Supra with no problem. However, BMW M might not want to give away its pride and joy. Speaking to Autocar recently, Markus Flasch, BMW M president, said:

“We’ve certainly made no offer to supply the engine to Toyota – and no request has been made, as far as I know. But it’s an interesting idea, if unlikely for now. It would be a lot for us to give away, you might say. But I’d never say never.”

The GR Supra in its most potent form comes with the B58 as mentioned, which is a 3.0-litre turbo inline six that produces 250kW and 500Nm. It’s a BMW engine that’s tuned by M Performance; not M division. This is the same engine that’s used in the new BMW Z4 M40i, and slightly different to the B58 featured in non-M Performance models such as the X5 xDrive40i, developing 250kW and 450Nm.

As for the S58, it is very loosely based on the B58 only it uses bespoke M division components in almost all areas. It’s also set to be the engine that will power the new-generation M3 and M4, still under development. The engine is offered in the base X3/X4 M where it produces 350kW and 600Nm, or 375kW for the Competition variants.

With up to 375kW, the GR Supra would be pushed into a more serious end of the market, where it could go up against the likes of the Mercedes-AMG C 63 S coupe, and even the Nissan GT-R to some degree. However, it will depend on whether M division wants to give away the engine, and if BMW beancounters think it makes good business sense. Flasch also said:

“As a rule, we don’t offer BMW M engines to third parties because we consider them such a strength of our cars,” Flasch added. “I think it would be a hard decision for a lot of the team to accept – particularly with the S58 being so new. Why would we sell it before we had a chance to use it ourselves in all the places we plan to?”

Brett is the editor and founder of PerformanceDrive. He's obsessed with driving, having played with Matchbox cars until he was tall enough to drive a real one. After initially working as a mechanic, Brett earned a degree in journalism and entered media as an editorial assistant at Top Gear Australia magazine. He then worked at CarAdvice.com.au. His dream is to live next door to the Nurburgring in Germany.