EngineCritical
Theta II 2.0T/2.4 GDI rod-bearing failure / seizure.
- Typically appears
- 70,000+ miles
- What to inspect
- Listen for engine knock and confirm any engine replacement or recall/warranty work.
2018 Hyundai Santa Fe problems
A 2018 Hyundai Santa Fe is now 8 years old, so an average example has covered around 108,000 miles. The final model year of the generation · generally the most sorted build, so mileage, servicing and condition matter more than build-year faults. Check the state safety inspection and service history alongside the documented faults below, which are sorted by whether a 2018 car has usually reached the mileage where they appear.
Compiled & reviewed by the VehicleFaults Research Team
Quick answer
The 2018 Hyundai Santa Fe is 8 years old, so an average example has covered roughly 108,000 miles. At that mileage 3 of the documented faults are already due, so check those first.
Faults a 2018 example has usually reached
Documented onset mileage is at or below the ~108k miles an average 2018 car has covered.
EngineHigh
Oil consumption on GDI engines.
- Typically appears
- 70,000+ miles
- What to inspect
- Check oil level and consumption history.
BrakesMedium
Brake wear and ABS faults.
- Typically appears
- 60,000+ miles
- What to inspect
- Test braking and scan for ABS codes.
Faults that appear at any mileage
Age, electronics and build-related issues that are not mileage-driven.
BodyLow
Panoramic roof rattles / leaks.
- Typically appears
- Age-related
- What to inspect
- Test the roof and check for stains.
Inspecting a 2018 Hyundai Santa Fe?
Generate a tickable pre-purchase checklist for this exact year, mileage and variant · add photos and notes as you inspect.
Check this exact carHyundai Santa Fe · frequently asked questions
Is the Santa Fe reliable?
Value-oriented, but the Theta II engine failure risk is significant — check history.
What is the Theta II engine problem?
GDI rod bearings can fail and seize the engine; many were replaced under warranty.
Is there an engine warranty?
Extended powertrain warranties applied to many affected engines; confirm coverage.