48V mild-hybrid battery and start-stop faults
- Typically appears
- 40,000+ miles
- What to inspect
- Watch for stop-start refusing to engage and warning messages on start-up

A 2023 Ford Puma is now 3 years old, so an average example has covered around 40,500 miles. A mid-run car · most launch faults had been addressed by this point, and wear items are the main risk at this age. Check the state safety inspection and service history alongside the documented faults below, which are sorted by whether a 2023 car has usually reached the mileage where they appear.
Compiled & reviewed by the VehicleFaults Research Team
The 2023 Ford Puma is 3 years old, so an average example has covered roughly 40,500 miles. At that mileage 1 of the documented faults are already due, so check those first. A further 1 typically appear later in the car's life.
Documented onset mileage is at or below the ~41k miles an average 2023 car has covered.
48V mild-hybrid battery and start-stop faults
Age, electronics and build-related issues that are not mileage-driven.
Tailgate and boot 'megabox' drainage water ingress
Rear brake corrosion from low usage on hybrid cars
Typically appear later than this year's average mileage · worth budgeting for rather than inspecting.
Wet timing belt wear on 1.0 EcoBoost mHEV
Generate a tickable pre-purchase checklist for this exact year, mileage and variant · add photos and notes as you inspect.
Check this exact carNo, a wet belt in oil. Treat missing belt history as a priced-in job.
Not usually, but a failing 48V battery throws warnings and puts buyers off on the test drive.
The megabox drain. Standing water there is a common and easily missed fault.