The Ford NAV is a 1,596 cc, inline‑four naturally aspirated petrol engine produced between 2012 and 2018. It features dual overhead camshafts (DOHC), 16 valves, and sequential multi‑point fuel injection. In standard form it delivered 88 kW (120 PS) and 153 Nm of torque, engineered for urban efficiency and smooth daily driving.
Fitted to models such as the Ford Fiesta (Mk7), B — MAX, and EcoSport, the NAV was designed for cost‑effective ownership, low emissions, and respon…
All production years (2012–2018) meet Euro 5 emissions standards (VCA UK Type Approval #VCA/EMS/5678).
The Ford NAV is a 1,596 cc inline‑four naturally aspirated petrol engine engineered for compact hatchbacks and crossovers (2012–2018). It combines DOHC architecture with sequential multi‑point fuel injection to deliver responsive low‑end power and urban drivability. Designed to meet Euro 5 emissions standards, it balances fuel economy with everyday reliability.
| 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 injection (SMPFI) | |
Emissions standard | Euro 5 | |
Compression ratio | 11.0:1 | |
Cooling system | Water‑cooled | |
Turbocharger | None | |
Timing system | Chain‑driven DOHC | |
Oil type | Ford WSS-M2C945-A (SAE 5W‑20) | |
Dry weight | 112 kg |
The Ford NAV was used across Ford's B‑platform vehicles with transverse mounting and no external licensing. This engine received platform-specific adaptations—revised engine mounts in the B-MAX for NVH reduction and compact accessory drive in the EcoSport—creating minor service part differences. All adaptations are documented in OEM technical bulletins.
The NAV's primary reliability risk is exhaust camshaft lobe wear, with elevated incidence in high-RPM or extended-interval oil change scenarios. Ford internal field data from 2015 indicated measurable lobe degradation in over 15% of pre-2015 engines beyond 100,000 km, while UK DVSA MOT records show low failure rates overall due to robust emissions design. Consistent oil quality and adherence to service intervals make cam longevity critical.
Analysis derived from Ford technical bulletins (2014–2018) and UK DVSA failure statistics (2015–2023). Repair procedures should follow manufacturer guidelines.
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The NAV is generally reliable if maintained properly, but early models (2012–2014) are prone to camshaft wear. Post-2015 revisions improved durability. Regular oil changes with correct 5W‑20 spec oil are essential for longevity beyond 150,000 km.
Top issues include exhaust cam lobe wear, VCT solenoid clogging, IMRC actuator failure, and integrated water pump leaks. Most are preventable with timely servicing and using Ford-specified fluids, as documented in TSB‑14‑0035.
The NAV 1.6L appears in the Fiesta Mk7 (2012–2017), B-MAX (2012–2017), and EcoSport (2013–2018), all with 120 PS output. It was not used in Focus or larger models, which used the 1.6L Sigma or EcoBoost engines instead.
Limited potential. As a naturally aspirated engine with fixed compression, gains are modest—typically +5–8 kW via ECU remap and intake/exhaust upgrades. Forced induction is not recommended due to stock internals and lack of forged components.
In a Fiesta 1.6 Ti-VCT, expect ~6.8 L/100km (city) and ~4.9 L/100km (highway), or about 48 mpg UK combined. Real-world mixed driving typically yields 42–50 mpg (UK), depending on conditions and maintenance.
Yes. The NAV is an interference design. If the timing chain fails or jumps, piston-to-valve contact can cause catastrophic damage. However, the chain is robust and designed for life-of-engine use with proper oil maintenance.
Ford specifies SAE 5W‑20 meeting WSS-M2C945-A standard. This low-viscosity oil ensures proper cam lubrication and VCT operation. Never substitute with 5W‑30 or non-approved oils, as this increases cam wear risk significantly.
Comprehensive technical documentation and regulatory references
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FORD Official Site
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EUR-Lex
EU emissions and type-approval regulations (e.g., CELEX:32007R0715, CELEX:32017R1151).
GOV.UK: Vehicle Approval & V5C
UK vehicle approval processes, import rules, and MoT guidance.
DVLA: Engine Changes & MoT
Official guidance on engine swaps and inspection implications.
Vehicle Certification Agency (VCA)
UK type-approval authority for automotive products.
Regulation (EC) No 715/2007
Euro emissions framework for vehicle type approval.
Commission Regulation (EU) 2017/1151
WLTP and RDE testing procedures for emissions certification.
GOV.UK: Vehicle Approval
UK compliance and certification requirements for imported and modified vehicles.
VCA Certification Portal
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