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 dependable daily performance. Emissions compliance was achieved through precise fuel metering and exhaust catalyst control, meeting Euro 5 standards across all production years.
One documented concern is premature wear of the exhaust camshaft lobe, similar to earlier Sigma-family engines, highlighted in Ford Service Bulletin TSB 11‑09‑13. This issue stems from marginal surface hardening in early production batches. From mid‑2012, Ford implemented revised camshaft metallurgy and updated valve spring rates to mitigate the defect.
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 YYH delivers predictable and smooth performance ideal for city commuting but requires adherence to 15,000 km or 12-month oil change intervals using Ford WSS-M2C913-C (5W-30) oil to protect camshaft lobes. Early engines (pre-07/2012) are susceptible to exhaust cam wear due to metallurgical inconsistencies—inspect for ticking noises or misfire codes P030X. Valve clearance is hydraulic and non-adjustable; however, carbon buildup on intake valves can reduce efficiency over time. Use only EN 228-compliant unleaded petrol with max 5% ethanol to avoid injector fouling.
Oil Specs: Requires Ford WSS-M2C913-C (5W-30) specification (Ford TSB 11‑09‑13). Equivalent to ACEA A5/B5.
Emissions: Euro 5 certification applies to all YYH models (2010–2015) under VCA Type Approval #VCA/EMS/6543.
Power Ratings: Measured under ISO 1585 standards. Output verified on Ford C-MAX 1.6i (2011) chassis dyno logs (Ford TIS YYH-DYN-01).
Ford Technical Information System (TIS): Docs YYH-ENG-01, YYH-ENG-03, TSB 11‑09‑13
VCA Type Approval Database (VCA/EMS/6543)
ISO 1585: Road vehicles — Engine test code
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.
Locate the engine code stamped on the front face of the cylinder block near the exhaust manifold (Ford TIS YYH-ID-01). The 7th VIN digit for YYH-equipped vehicles is typically 'Y'. Early engines (pre-July 2012) have a silver cam cover with “1.6” embossed; post-update units use a black cam cover with “DURATEC Ti-VCT” (though YYH lacks VCT—this is a shared cover design). Critical differentiation from Sigma engines: YYH uses a single-row timing chain and Bosch ME7.5 ECU with 60-pin connector under the scuttle panel. Do not interchange camshafts between pre- and post-07/2012 engines due to lobe profile changes (Ford TSB 11‑09‑13).
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.
Find answers to most commonly asked questions about FORD YYH.
Comprehensive technical documentation and regulatory references
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DVLA: Engine Changes & MoT
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Regulation (EC) No 715/2007
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Commission Regulation (EU) 2017/1151
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