DTM boss Gerhard Berger has ruled out the prospect of the series bringing back refuelling after Audi driver Loic Duval mooted the idea over the Assen weekend.
Autosport understands that the DTM's race format is under review, but it will not include a return to refuelling after it was dropped in 2012.
The DTM's Class One tie-up with Super GT means it now has an alliance with a series that uses refuelling, with the Japanese series' endurance roots coming in contrast to the DTM's sprint-like format.
Duval had said: "You could start with a light car with little gas onboard and have the opportunity to overtake because a lighter car is always faster than a heavier one.
"Or vice versa: You fill up for the start and have a very light car at the end."
But when asked by Autosport if the DTM could bring back refuelling, Berger said: "We do not consider that. That has to do with the high costs."
The costs of fuel rigs, and the logistics of transporting them across Europe, would make a push for refuelling a U-turn from Berger's cost-cutting agenda.
Formula 1 is currently evaluating the return of refuelling, but Berger says F1 is the exception to the rule on costs.
"Formula 1 is a technical platform - and anyone signing up to this one is going for a sporting competition at the highest level," said Berger.
"It will cost you €400 million or a few billion if you have to develop a new engine.
"You cannot do that in the rest of motorsport. There you can lock up [and close] tomorrow."
Part of Berger's push to save costs is to help encourage customer teams into the series after only WRT joined for 2019.
It is understood the cost of running a privateer outfit is around €5-6million, although WRT would not speak about project finances when asked by Autosport.