One problem related to engine failure has been reported for the 2020 Toyota Yaris. The most recently reported issues are listed below.
The owners manual capacities for an oil change with filter calls for 4. 4qts. When this amount of oil is used and the proper instructions are followed as per the same manual to check the level with the dipstick it shows that it is overfilled by close to 1qt. The dealership can't explain it nor can Toyota. I truly believe that this could cause either premature engine failure or possibly an engine fire because of this design flaw.
| Engine And Engine Cooling problems | |
| Engine Failure problems |