Not long ago, the five-cylinder 2.5 TFSI looked doomed — set to disappear along with the current era of the Audi RS3. Now the picture has changed: Audi Sport boss Rolf Michl has told Autocar that the evaluation of the engine’s future is still ongoing. There’s no decision yet on an RS3 successor either.
The real enemy of this legendary five-cylinder isn’t the competition — it’s the accounting. The economics of adapting it to Euro 7 simply don’t add up. Audi CEO Gernot Döllner has previously admitted the company isn’t sure it can “recoup the investment required to meet EU7 requirements.” The engine would need new filtration systems, sensors, revised injection and exhaust treatment — and today the 2.5-litre “turbo five” sits in just two cars on the planet: the Audi RS3 and the Cupra Formentor VZ5.
You’d think the verdict was obvious. But inside Audi Sport, this engine is clearly not treated like just another powerplant.
“We are absolutely aware of the DNA of a five-cylinder engine. Evaluations are still running, and people who know me know that I also have a personal relationship with the five-cylinder engine. It’s so characterful and so deeply rooted in history — so let’s see,” Michl said.
This isn’t just nostalgia. The RS3 is the most accessible door into the Audi RS world, and losing it would hit far more than one hot hatch.
“The entrance into the RS world is important, because having such a statement of the brand is amazing. Emotions start in the compact segment,” the Audi Sport boss explained.
And that’s exactly where the 2.5 TFSI gets an unexpected shot at survival. Spreading the cost of Euro 7 compliance across only the RS3 and the low-volume Formentor VZ5 makes the upgrade brutally expensive. But the more Volkswagen Group models that get this engine, the better the business case looks. Autocar has previously reported that the five-cylinder is being considered for an extreme version of the Volkswagen Golf R — though that car itself remains unconfirmed.
Hybridisation is another option on the table. It could cut emissions, but it adds both cost and weight. No final call has been made on either path — not the hybrid route, not a full farewell to five cylinders.
“Negotiations are ongoing, so we haven’t reached the point of a decision yet. Everyone really understands the significance of this engine, and that’s why we’re still weighing options together with our colleagues at Audi AG,” Michl said.
The next major milestone in this story won’t be another anniversary edition of the RS3 — it’ll be Audi’s technical call on the 2.5 TFSI and the architecture of its successor. And it looks like the Competition Limited was never destined to be the final chapter of the five-cylinder saga.
