Audi’s Five-Cylinder Engine Might Not Die After All — Hybrid Plans Could Keep the 2.5 TFSI Alive

Audi is reconsidering the fate of its iconic 2.5-liter turbocharged five-cylinder TFSI engine, which was previously slated for extinction under tightening emissions rules. The decision follows comments from Audi Sport boss Rolf Michl, who confirmed to Autocar that evaluations are ongoing to determine whether the inline-five can survive into a future generation. The move marks a sharp reversal from Audi’s earlier stance, when CEO Gernot Döllner indicated in September 2025 that the engine’s Euro 7 compliance costs weren’t justified by the RS3’s low sales volumes. At the time, the TT RS and RS Q3 had already been discontinued, leaving the RS3 as the sole European model powered by the 2.5 TFSI. European production was originally set to end by mid-2027, with the engine continuing only in markets with less stringent emissions standards. Now, Audi is exploring whether hybridization could extend the engine’s lifespan, though the added cost and weight remain hurdles. The potential revival comes amid speculation that Volkswagen Group may finally deploy the five-cylinder in the Golf R, a move Audi reportedly blocked in 2020. The engine has already found a home in the Cupra Formentor, proving its adaptability. Michl emphasized that no final decision has been made, and the engine’s survival hinges on whether Audi can justify the investment—especially in Europe. For now, the five-cylinder isn’t dead; it’s just waiting for Audi’s engineers and accountants to agree on its future. The irony? After surviving downsizing and electrification, the engine’s biggest threat might be a spreadsheet.