EngineCritical
Theta II 2.0T/2.4L engine failure (bearing/knock) — recalls and warranty extensions apply.
- Typically appears
- 60,000+ miles
- What to inspect
- Listen for knock; confirm the knock-sensor recall and any engine replacement.
2017 Kia Optima problems
A 2017 Kia Optima is now 9 years old, so an average example has covered around 121,500 miles. An early car in the generation · most of the launch teething issues were still being worked through, so recall completion and dealer rectification history matter. Check the state safety inspection and service history alongside the documented faults below, which are sorted by whether a 2017 car has usually reached the mileage where they appear.
Compiled & reviewed by the VehicleFaults Research Team
Quick answer
The 2017 Kia Optima is 9 years old, so an average example has covered roughly 121,500 miles. At that mileage 2 of the documented faults are already due, so check those first.
Faults a 2017 example has usually reached
Documented onset mileage is at or below the ~122k miles an average 2017 car has covered.
EngineHigh
Excessive oil consumption.
- Typically appears
- 70,000+ miles
- What to inspect
- Check oil level and history.
Faults that appear at any mileage
Age, electronics and build-related issues that are not mileage-driven.
ElectricalLow
Infotainment and sensor glitches.
- Typically appears
- Any
- What to inspect
- Test the screen and features.
TransmissionLow
Occasional harsh shifts.
- Typically appears
- Any
- What to inspect
- Test-drive for smooth engagement.
Inspecting a 2017 Kia Optima?
Generate a tickable pre-purchase checklist for this exact year, mileage and variant · add photos and notes as you inspect.
Check this exact carKia Optima · frequently asked questions
Do Kia Optima engines fail?
The Theta II engines have a documented failure history with recalls — verify the knock-sensor update and any engine replacement.
Is the Optima a good used buy?
Strong value if recall history is confirmed and oil use is clean.
What's the knock-sensor recall?
A detection system added to catch bearing wear early — confirm it was installed.