Your Infiniti Q50 2.0T Is Really a Mercedes — Here's Why That Matters for Tuning

If you own an Infiniti Q50 2.0T, Q60 2.0T, QX30, or Q30, you're driving a car with a Mercedes-Benz engine and a Mercedes-Benz ECU . That isn't marketing — it's the direct result of the Daimler-Renault-Nissan alliance, and it has real consequences for how (and how well) your car can be tuned. The Mercedes engine under your Infiniti The 2.0-liter turbo four in the 2015–2022 Q50 2.0T and Q60 2.0T is the Mercedes-Benz M274 — the exact same engine family found in the C300 (W205), CLA250, GLA250, and GLC300. The smaller QX30 and Q30 use the closely related M270 , including a 1.6-liter turbo version that's almost unique to those models. Just as importantly, these engines are managed by the Bosch MED17.7 ECU — the same generation of engine computer AMR has been reverse-engineering and flashing on the Mercedes side for years. When you tune a Q50 2.0T, you're really tuning a Bosch-managed Mercedes powertrain wearing an Infiniti badge. Which Infiniti runs which Mercedes engine Infiniti model Engine Mercedes equivalent Q50 2.0T / Q50L M274 2.0L turbo C300, E300, GLC300 Q60 2.0T M274 2.0L turbo C300 Coupe QX30 2.0T M270 2.0L turbo GLA250, CLA250 QX30 / Q30 1.6T M270 1.6L turbo A200, CLA180 (global) Why the Mercedes DNA matters for your tune Here's the part that actually affects you: because AMR already cracks the Bosch MED17.7 ECU on Mercedes cars, we can deliver a genuine ECU flash for these Infinitis — not a piggyback that works around the factory computer, but a real rewrite of the calibration itself. That's why the COMPORT iPRO is the only true wireless OBD flash for the Q50 2.0T platform. It reprograms the factory ECU's fuel, timing, boost, and torque-limiter tables directly over the OBD port — from your phone, in minutes, with nothing left installed in your engine bay. Most Infiniti 2.0T owners never hear that a real flash exists, so they default to a JB4 piggyback. We wrote a full, fair breakdown of the difference here: JB4 vs. a real ECU flash on the Q50 2.0T . What that unlocks Real calibration changes instead of intercepted sensor signals — more headroom, especially with bolt-ons. Wireless OBD install — no laptop, no ECU removal, no module wired into your bay. ProTuner support — the same custom-tuning depth AMR built on the Mercedes side carries straight over to your Infiniti. Flash back to stock anytime, right in the app. The overlooked 1.6T The QX30 and Q30 1.6T (Mercedes M270) are among the least-served cars in the tuning world — almost nobody offers anything for them, let alone a real OBD flash. Because it's the same Bosch-managed Mercedes architecture, AMR can. If you drive one, you finally have a genuine tuning option. Bottom line Your Infiniti's Mercedes engine isn't a trivia fact — it's the reason a real, wireless ECU flash is possible for a car most people assume can only run a piggyback. See what's available for your model in the Infiniti tuning shop , or read the JB4-vs-flash comparison to decide which route fits you. Curious about the Mercedes side of this engine? See our guide on the Mercedes C300 (W205) M274 platform.