NHTSA Complaint #11634068 — 2018 CHEVROLET CRUZE

Purchased new in 2019 – 32k miles - Oil changes every 6 months. Lightly driven, no modifications, all original engine components and tune. Engine developed a significant miss. Several warnings on Stabilitrak, ABS, and P0300. Significant oil leak at front of engine, oil is splashed all over the passenger side of the engine compartment. There is significant ‘chugging’ of air and oil from the dipstick tube and from the oil filler cap. This condition indicates excessive pressure leakage to the crankcase that is caused by a crack or failure to the #1 piston which is a very, very, very common failure with an extensive and indisputably documented history with the 1.4 engine throughout the history of the Chevrolet Cruze since its introduction. Compression test shows cylinder #1 at about 80 PSI while cylinders 2, 3, and 4 are at 190 PSI. This proves that there is a catastrophic compression leak down into the engine crankcase causing the misfire P0300 and the resulting excessive crankcase pressure causing the oil leak at the front of the engine and the expelling of air and oil from the dipstick tube and from the oil filler cap. This needs to be a warranty repair and the cost covered 100% by GM as it is a known defect with this engine since it has been first been used in their cars. Refer to: GM Bulletin: 18-NA-171 - [XXX] GM Bulletin: PIP5490D - [XXX] GM Bulletin: PIP5421 - [XXX] Reading through the extensive volume of posts on the #1 piston failure, GM/Chevrolet should have acknowledged this and a recall should have been issued and the warranty extended to cover an piston and/or piston ring failures with the 1.4 engine no matter what year or what vehicle it was installed in. I have additional links documenting the frequency of the piston and/or piston ring failure in the 1.4 engine: INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)