Ford Puma 1.0 EcoBoost

This is the single most discussed issue on Ford Puma forums, with a dedicated thread spanning over 140 pages. The mHEV system uses a belt-integrated starter-generator (BISG) that charges the 48V battery and a DC/DC converter to charge the 12V system. In practice, the 12V battery often loses more charge than it gains, especially on short trips. Cars left parked for 7-14 days frequently won't start. Ford's original Rombat batteries are widely considered inadequate, and many owners replace them with higher-capacity Varta or Yuasa units for €200-350. Early models also had a TCU (telematics control unit) recall where the modem stayed active and drained the battery continuously. A CTEK trickle charger is recommended if the car sits idle for more than a week. If the 48V battery pack itself fails, replacement costs €300-400.

While the Puma's 1.0 EcoBoost uses a timing chain for the camshaft (a significant improvement over the older wet timing belt design), the oil pump is still driven by a rubber belt submerged in engine oil. Over time, this belt degrades and sheds rubber particles that can clog the oil pump pickup screen, leading to oil starvation and catastrophic engine damage. Failures are most commonly reported between 100,000-160,000 km (60,000-100,000 miles). Ford does not classify this as a service item and there is no scheduled replacement interval. Preventive replacement costs €800-1,200 at a specialist (10-12 hours labour as the engine must be partially disassembled). If the belt failure causes engine damage, a replacement engine costs €2,000-2,500. Using the correct Ford oil spec (WSS-M2C948-B) and changing oil every 15,000 km or annually significantly reduces risk. The Puma's version of this belt appears more durable than the one used in earlier Fiesta/Focus EcoBoost engines.

All Euro 6d Puma models have a GPF with relatively small capacity. Owners report the 'Exhaust filter limit reached - drive to clean now' warning as frequently as every few hundred kilometres when driving mainly short distances in urban areas. Some owners have seen this warning appear within the first 1,000 km on a new car. The filter regenerates automatically during sustained highway driving at 3,000+ rpm for 15-20 minutes. If it fills completely before regeneration occurs, professional cleaning costs €200-400. A complete GPF replacement costs €1,000-1,500. This is primarily a driving-pattern issue rather than a manufacturing defect: owners who regularly drive longer distances rarely encounter the problem. For urban-only drivers, periodic highway runs every 300-400 km of city driving are essential prevention.

The Puma's optional automatic is a Getrag 7-speed DCT (not the older, infamously problematic Ford PowerShift). While generally better than its predecessor, owners still report jerky low-speed gear changes, hesitation when pulling away, and rough behaviour in stop-and-go traffic, especially when cold. Problems typically appear between 30,000-60,000 km. In many cases, a software update or gearbox recalibration resolves the issue for €100-200. If the clutch pack wears prematurely, replacement costs €800-1,500. Complete mechatronic failure is rare but can reach €2,000-3,000. Ford advises against the concept of a 'lifetime fill' — have the transmission fluid changed every 60,000 km regardless of what the handbook says. Manual gearbox models do not have this issue and are significantly more reliable.

Multiple Puma owners have reported finding damp carpets, particularly in the passenger footwell. Common causes include blocked plenum chamber drains under the windscreen (especially from leaf debris), deteriorating seals around the door mirrors and hinges, and poorly seated pollen filter housings after servicing. On models with the panoramic sunroof, blocked drain tubes are an additional entry point. If caught early, clearing blocked drains and resealing costs €150-300. If water has been sitting undetected, damp can damage the wiring loom, blower motor, or interior electronics, pushing costs to €500-800. Regular inspection and clearing of windscreen drainage areas is recommended, especially in autumn.

Pre-facelift Puma models (2019-2022) use SYNC 3, which can suffer from blank/black screens, freezing, and overheating of the touchscreen. The issue is usually caused by a failing APIM (Accessory Protocol Interface Module) or FDIM (Front Display Module), or the LVDS cable connecting them. A soft reset (hold Seek Up + Audio Power for 5 seconds) often provides temporary relief. Software updates sometimes help. Hardware replacement costs: APIM €600-900, FDIM/screen €400-600, cable €100-200. The 2022+ facelift models switched to SYNC 4 (Ford's newer system), which has fewer hardware issues but occasional software glitches.