The vehicle would intermittently lose power, drop into total limp mode, and crawl to a stop, with a warning light illuminated on the dash.

Fault codes stored were P1608-00 (engine stall history), P1605-00 (rough idling), P0300 (random/multiple misfire), and P0302 (cylinder 2 misfire). The misfire and limp mode occurred on road test, with catalyst temperature spiking to 800°C and the air-fuel sensor reading full rich. A technical service bulletin (TSB) was found detailing these exact symptoms and codes, linked to faulty ignition coils and ECU software, but the dealership dismissed this, attributing the issue to fuel quality.