Honda is adding a year to the powertrain warranty for about 1 million 2016-18 Civics and 2017-18 CR-Vs with the turbocharged 1.5-liter four-cylinder engine that powers higher trim levels of the vehicles. The engine has been the subject of complaints about gasoline contaminating the oil supply.
The problem in the vehicles, first reported in 2018 by Consumer Reports, is caused by gasoline from the cylinders not being fully burned and contaminating the engine oil, which could lower its effective lubrication and cause engine wear over time. Owners have complained of higher-than-normal oil levels on the dipstick, a fuel smell in the cabin and, in some cases, engine hesitancy and stalling. The warranty extension covers repairs for the potential engine wear and extends the five-year/50,000-mile powertrain warranty to six years and unlimited mileage.