The Ford YYH is a 1,596 cc, inline‑four naturally aspirated petrol engine produced between 2010 and 2015. It features a dual overhead camshaft (DOHC) layout with 16 valves and sequential multi‑point fuel injection. In standard form it delivered 88 kW (120 PS) and 153 Nm of torque, offering smooth urban drivability and low running costs.
Fitted to models such as the Ford C — MAX Mk2, Focus Mk3, and Grand C — MAX, the YYH was engineered for economy — focused drivers seeking depend…
All production years (2010–2015) meet Euro 5 emissions standards (VCA UK Type Approval #VCA/EMS/6543).
The Ford YYH is a 1,596 cc inline‑four naturally aspirated petrol engine engineered for compact MPVs and hatchbacks (2010–2015). It combines DOHC architecture with sequential multi‑point fuel injection to deliver smooth low‑to‑mid range response and urban efficiency. Designed to meet Euro 5 emissions standards, it balances everyday usability with serviceability.
| Parameter | Value | Source |
|---|---|---|
Displacement | 1,596 cc | |
Fuel type | Petrol (Unleaded) | |
Configuration | Inline‑4, DOHC, 16‑valve | |
Aspiration | Naturally aspirated | |
Bore × stroke | 79.0 mm × 81.4 mm | |
Power output | 88 kW (120 PS) @ 6,300 rpm | |
Torque | 153 Nm @ 4,250 rpm | |
Fuel system | Sequential multi‑point fuel injection (Bosch ME7.5) | |
Emissions standard | Euro 5 | |
Compression ratio | 11.0:1 | |
Cooling system | Water‑cooled | |
Turbocharger | None | |
Timing system | Chain (maintenance‑free design) | |
Oil type | Ford WSS-M2C913-C (SAE 5W‑30) | |
Dry weight | 116 kg |
The Ford YYH was used across Ford's C1 and B2E platforms with transverse mounting and no external licensing. This engine received platform-specific adaptations—revised engine mounts in the Grand C-MAX and modified airbox routing in the Focus Mk3—and from mid‑2012 the C-MAX facelift adopted updated camshafts and ECU calibrations, creating minor interchange limits. All adaptations are documented in OEM technical bulletins.
The YYH's primary reliability risk is exhaust camshaft lobe wear in early production units, with elevated incidence in high-mileage or infrequently serviced vehicles. Ford internal data from 2012 indicated up to 6% of pre-July 2012 engines required cam replacement before 100,000 km, while UK DVSA MOT records show cam-related misfires as a recurring cause of emissions test failure. Extended oil intervals and use of non-spec oil accelerate wear, making correct lubrication critical.
Analysis derived from Ford technical bulletins (2010–2015) and UK DVSA failure statistics (2015–2025). Repair procedures should follow manufacturer guidelines.
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The YYH is generally dependable if maintained properly, but early models (pre-2012) are prone to camshaft wear. Post-2012 revisions improved durability significantly. Using correct 5W-30 Ford-spec oil and adhering to service intervals greatly extends engine life. Many examples exceed 200,000 km with no major issues.
Top issues include exhaust cam lobe wear (pre-2012), carbon buildup on intake valves, coolant sensor drift, and cam cover oil leaks. Cam wear is the most severe and is addressed in Ford TSB 11‑09‑13. Regular oil changes and using quality fuel help prevent most problems.
The YYH powered the Ford C-MAX Mk2 (1.6i), Focus Mk3 (1.6 Zetec), and Grand C-MAX (1.6 Zetec) from 2010 to 2015. It was exclusive to European-market vehicles and not used in North America. All applications are transverse-mounted in front-wheel-drive layouts.
Modest gains are possible. ECU remapping typically yields +5–8 kW, limited by the naturally aspirated design and stock internals. Forced induction is not recommended without major bottom-end upgrades. Most owners focus on drivability tweaks rather than significant power increases.
In a Ford C-MAX 1.6i, expect ~7.0 L/100km (city) and ~5.0 L/100km (highway), or about 43 mpg UK combined. Real-world mixed driving typically returns 39–46 mpg (UK). Economy is best in light-load conditions; aggressive driving reduces efficiency significantly.
Yes. The YYH is an interference design. If the timing chain fails (rare but possible), pistons can contact open valves, causing catastrophic damage. However, the chain is designed to last the engine’s lifetime if oil is changed regularly.
Ford specifies SAE 5W‑30 oil meeting WSS-M2C913-C (or newer) standard. This ensures proper cam lobe protection and sludge control. Always use a quality synthetic blend and change every 15,000 km or 12 months, whichever comes first.
Comprehensive technical documentation and regulatory references
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DVLA: Engine Changes & MoT
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Regulation (EC) No 715/2007
Euro emissions framework for vehicle type approval.
Commission Regulation (EU) 2017/1151
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