Skip to the content

Oil cooled and not a refrigerant in sight: inside the Porsche GT4 e-Performance

Believe it or not, there is a link between the Porsche GT4 e-Performance cover star of SightGlass edition 32 and the Hyundai Ioniq 5 N that graced edition 31 – less obvious that both are performance cars which likely borrowed heavily from technology developed by Croatian electric hypercar manufacturer Rimac in which both companies have a stake.

The mastermind of the Porsche on this page, Björn Förster, a race engineer for the fabled German car-maker, makes no secret about his admiration for the hot Hyundai. He didn’t say so, but you could safely put money on him having one on order – if not in his garage already.

However, apart from the fact no roads authority would issue rego plates for Porsche’s little electric racer and you can drive an Ioniq 5 N away from your nearest Hyundai showroom, the key difference is thermal management.

Björn Förster: Fan of the Hyundai Ioniq 5 N

As we covered last edition, the Ioniq 5 N amps up the donor car’s sophisticated refrigerant- and glycol-based system while applying special temperature control modes for endurance on the circuit, optimal drag strip performance or just going as fast as possible.

By contrast, Förster says the GT4 e-Performance has no air-conditioning or even fans involved in its thermal management setup. Instead of glycol it uses a special oil formulated in conjunction with Mobil 1.

We don’t have any air-conditioning in the car … We don’t even have a fan.

Björn Förster

Förster and team borrowed battery modules from a Taycan road car, located them under the bonnet, in the passenger footwell and behind the seats, then turned up the wick from the Taycan’s 800 volts to more than 900.

This content is available only to VASA members. If you are an existing member, please log in below (your username is your VASA member number).

Not currently a VASA member? Join VASA online now!

Existing Members Log In

Free Industry News

Stay up to date with the latest industry news with our free monthly newsletter!