2018 Hyundai Tucson: Excessive oil consumption
Common wear/failure (not a recall)
Symptoms
Owners of the 2018 Tucson report: excessive oil consumption. CarComplaints.com lists 13 owner complaints, average mileage 62,550 miles.
NHTSA has 249 owner complaints for the 2018 Tucson in this area. Examples:
- NHTSA complaint ODI #11767171 (filed 09/26/2026): “Engine stalls jurks lose of power engine light blinking excessive oil use…”
- NHTSA complaint ODI #11764062 (filed 09/14/2026): “The contact owns a 2018 hyundai tucson. the contact stated that while driving approximately 65 mph, there was a knocking sound coming from the engine compartment, and the vehicle started shaking aggressively. the brake pedal was depressed; however, the vehicle…”
Likely causes
Sources do not establish a single root cause; diagnosis is needed. Owner-reported fixes are listed below.
Fix, in plain English
Most common owner-reported solutions on CarComplaints.com: recall engines & replace engine with extended warranty (5 reports) replaced catalytic converter - misfire p0303 (1 reports). Check for open recalls and extended warranty coverage with a dealer before paying out of pocket.
DIY difficulty: Pro
Internal engine work (lifters, oil consumption, fuel dilution diagnosis) requires engine teardown or dealer software/tests. (Our assessment.)
Cost
CarComplaints.com owners report a typical repair cost of about $950 (owner-reported average, not a quote).
Typical parts (search links, no affiliate codes)
AutoZone · O'Reilly · Advance · RockAuto
Sources
Page last updated .