First/only owner of a 2018 VW Passat GP r-line, scheduled maintenance intervals followed religiously and performed by VW; only filled with top tier fuel (mid/premium), no prev. indicator lights ever illuminated until ECM light (no accompanying warning lights) came on while driving at highway speed with Adaptive Cruise Control engaged. Immediate loss of power and shaking vibration upon any attempt to accelerate/change lanes to safely get off of roadway. Once off roadway, all systems shut down and engine turned off for several minutes. Restarted car w/o difficulty, remained parked for 5 more minutes to monitor ECM light which did not return after shut down/restart. Returned to highway while safely merging into lane with conservative acceleration. ECM warning light did not return and vibration/shutterring had ceased. No unusual or abnormal gas mileage readings found upon close monitoring. Vehicle was driven x3 (relatively short distances) with speeds no greater than 65 mph; no return of ECM or any other warning lights. On the 4th drive, while attempting to evade an idiot, accelerator was applied more aggressively so as to avoid a near-catastrophic collision (nowhere to slow down or go to shoulder safely within 0.75/sec) which triggered the ECM light accompanied with loss of power/shuttering/vibration when pressure applied to accelerator. Pulled over, shut down, waited, panicked a little, then restarted engine. ECM light did not reappear after shut down/restart. Vehicle operated flawlessly once more. Injector/fuel system cleaner added to fuel tank and driven 40 mins in Sport mode to burn corrosive buildup effectively. Fuel tank refilled at new fueling station (thinking bad gas was a differential) and no issues since. Codes not showing up when diagnostics are ran. VW won-??t fix something that isn-??t presenting itself as a problem, at that very moment. 93k miles w/ NO prev. engine/emissions/transmission probs.

- Buda, TX, USA