1.5 EcoBoost (Puma ST)
2020–2024 · petrol · 1497cc · 200hp
Engine codes: BL3X
Reliability, common problems and owner reviews for the Ford Puma 1.5 EcoBoost (Puma ST). Check this before you buy used.
The 1.5 EcoBoost three-cylinder in the Puma ST makes it a genuinely fun hot crossover (the same engine family as the Fiesta ST). It's a punchy direct-injection turbo, with the modern cautions: intake-valve carbon over time, turbo/PCV care, and — as with the wider EcoBoost family — careful oil discipline and attention to the belt/cooling. The Fiesta ST 1.5 had some early reliability chatter (and the wider EcoBoost coolant attention), so buy a serviced car with documented oil history. A well-kept ST is a hoot; just treat the oil and cooling seriously.
Known Issues
DI intake carbon over time; turbo/PCV care.
Fix / Workaround: Decarbon if rough; clean oil for turbo.
Repair cost: €200–€1000
Typically appears after: 110,000 km
Monitor coolant (EcoBoost intrusion attention); strict oil discipline.
Fix / Workaround: Watch coolant; on-time oil with correct grade.
Repair cost: €150–€1200
Typically appears after: 90,000 km
Mileage Thresholds
After 150,000 km: Carbon + cooling window.
Pre-Purchase Checklist
- ☐The fun pick (Puma ST)
- ☐Same 1.5 EcoBoost family as Fiesta ST
- ☐Oil + coolant discipline
Frequently asked questions
Is the Ford Puma 1.5 EcoBoost (Puma ST) reliable?
Maint. Sensitive — The 1.5 EcoBoost three-cylinder in the Puma ST makes it a genuinely fun hot crossover (the same engine family as the Fiesta ST). It's a punchy direct-injection turbo, with the modern cautions: intake-valve carbon over time, turbo/PCV care, and — as with the wider EcoBoost family — careful oil discipline and attention to the belt/cooling. The Fiesta ST 1.5 had some early reliability chatter (and the wider EcoBoost coolant attention), so buy a serviced car with documented oil history. A well-kept ST is a hoot; just treat the oil and cooling seriously.
What are the common problems and reviews for the Ford Puma 1.5 EcoBoost (Puma ST)?
The most commonly reported problems: Intake carbon / turbo, Coolant / oil discipline (EcoBoost).
Is a used Ford Puma 1.5 EcoBoost (Puma ST) worth buying?
Fine if serviced correctly — but it punishes neglect hard. History and the right consumables matter.