GDI engine rod knock / seizure (2.0 Nu / Theta).
- Typically appears
- 70,000+ miles
- What to inspect
- Listen for knock and confirm any engine recall/warranty work.
The 2nd-gen Soul is a practical, funky hatch, but the Theta/Gamma GDI engine and steering coupler are the checks.
Compiled & reviewed by the VehicleFaults Research Team · last reviewed July 2026
GDI engine rod knock / seizure (2.0 Nu / Theta).
Catalytic converter failure damaging the engine on some cars.
Steering coupler noise / clunk.
AC performance drop.
Generate a full, tickable pre-purchase checklist tailored to this exact vehicle — add photos and notes as you inspect.
Generate a free checklistPractical and cheap, but check the GDI engine history carefully.
GDI rod-knock and catalytic-converter failures; confirm any recall work.
Extended powertrain coverage applied to many affected engines; verify it.
Faults are compiled from documented recalls, technical bulletins, owner reports and mechanic sources, then reviewed for accuracy. This is guidance only · not a substitute for a professional inspection.