1.5 Turbo (4B40)
2017–2024 · petrol · 1499cc · 163hp
Engine codes: 4B40
Reliability, common problems and owner reviews for the Mitsubishi Eclipse Cross 1.5 Turbo (4B40). Check this before you buy used.
The 1.5 Turbo (4B40, Mitsubishi's direct-injection turbo four) is the volume Eclipse Cross petrol and a willing, reasonably economical unit with available S-AWC all-wheel drive. It's chain-driven with the modern-turbo cautions: direct-injection intake-valve carbon over time, turbo/PCV care, and — most notably — it's paired with a CVT (Mitsubishi's familiar continuously-variable auto) which must be serviced with the correct fluid and treated gently; the CVT is the part to scrutinise more than the engine. A serviced car on clean oil with a healthy CVT is dependable. Buy on oil and CVT history.
Known Issues
Mitsubishi CVT needs correct fluid and gentle use; expensive if neglected.
Fix / Workaround: CVT fluid service; smooth driving; check for shudder.
Repair cost: €200–€2000
Typically appears after: 120,000 km
DI intake carbon over time; turbo/PCV care.
Fix / Workaround: Decarbon if rough; clean oil.
Repair cost: €200–€700
Typically appears after: 130,000 km
Mileage Thresholds
After 180,000 km: Mind the CVT; engine durable.
Pre-Purchase Checklist
- ☐CVT fluid history is key
- ☐S-AWC AWD available
- ☐Rough idle = intake carbon
Frequently asked questions
Is the Mitsubishi Eclipse Cross 1.5 Turbo (4B40) reliable?
Maint. Sensitive — The 1.5 Turbo (4B40, Mitsubishi's direct-injection turbo four) is the volume Eclipse Cross petrol and a willing, reasonably economical unit with available S-AWC all-wheel drive. It's chain-driven with the modern-turbo cautions: direct-injection intake-valve carbon over time, turbo/PCV care, and — most notably — it's paired with a CVT (Mitsubishi's familiar continuously-variable auto) which must be serviced with the correct fluid and treated gently; the CVT is the part to scrutinise more than the engine. A serviced car on clean oil with a healthy CVT is dependable. Buy on oil and CVT history.
What are the common problems and reviews for the Mitsubishi Eclipse Cross 1.5 Turbo (4B40)?
The most commonly reported problems: CVT auto service, Intake carbon / turbo.
Is a used Mitsubishi Eclipse Cross 1.5 Turbo (4B40) worth buying?
Fine if serviced correctly — but it punishes neglect hard. History and the right consumables matter.