One problem related to engine exhaust system has been reported for the 1998 Toyota Avalon. The most recently reported issues are listed below.
Sludge in engine causing smoke to come from back of car.
| Gasoline Engine problems | |
| Car Stall problems | |
| Engine Burning Oil problems | |
| Engine problems | |
| Engine And Engine Cooling problems | |
| Engine Exhaust System problems |