The Ford NA2A is a 1,299 cc, inline‑four naturally aspirated petrol engine produced between 2002 and 2008. It features a single overhead camshaft (SOHC), 8‑valve architecture and sequential multi‑point fuel injection. In standard form it delivered 55 kW (75 PS) at 5,200 rpm and 110 Nm of torque at 3,500 rpm, offering responsive urban drivability and low running costs.
Fitted to models such as the Mk5 Fiesta and Streetka, the NA2A was engineered for entry‑level affordabil…
All production years 2002–2008 meet Euro 4 standards .
The Ford NA2A is a 1,299 cc inline‑four naturally aspirated petrol engine engineered for compact city cars (2002–2008). It combines sequential multi‑point fuel injection with a single overhead camshaft to deliver responsive low‑rpm performance and serviceability. Designed to meet Euro 4 emissions standards, it prioritises cost‑effective ownership and mechanical simplicity.
| Parameter | Value | Source |
|---|---|---|
Displacement | 1,299 cc | |
Fuel type | Petrol | |
Configuration | Inline‑4, SOHC, 8‑valve | |
Aspiration | Naturally aspirated | |
Bore × stroke | 71.9 mm × 80.0 mm | |
Power output | 55 kW (75 PS) @ 5,200 rpm | |
Torque | 110 Nm @ 3,500 rpm | |
Fuel system | Sequential multi‑point injection (Bosch ME7.0) | |
Emissions standard | Euro 4 | |
Compression ratio | 10.0:1 | |
Cooling system | Water‑cooled | |
Turbocharger | None | |
Timing system | Chain (front‑mounted) | |
Oil type | Ford WSS‑M2C913‑B (SAE 5W‑30) | |
Dry weight | 98 kg |
The Ford NA2A was used across Ford's B‑platform with transverse mounting and no external licensing. This engine received platform-specific adaptations—revised engine mounts in the Streetka and modified intake manifolds in the Fiesta Mk5—and from 2005 the facelifted Fiesta adopted updated engine management calibrations, creating minor ECU interchange limits. All adaptations are documented in OEM technical bulletins.
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Field reports and technical service bulletins highlight component wear patterns under high-load operation. Adherence to manufacturer service intervals and approved fluid specifications is critical for long-term reliability.
Analysis derived from manufacturer technical service bulletins and industry workshop records. Repair procedures should follow manufacturer guidelines.
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The NA2A is generally reliable if maintained properly, though pre-2005 engines are prone to camshaft wear after 100,000 km. Post-2005 revisions improved durability. Regular oil changes with Ford-specified 5W-30 oil and timely timing chain service greatly extend engine life.
Key issues include exhaust cam lobe wear (pre-2005), timing chain tensioner rattle, throttle body carbon buildup, and coolant leaks from the plastic thermostat housing. These are documented in Ford TSB 04-09-12 and related service updates.
The NA2A powered the Ford Fiesta Mk5 (2002–2008) and Streetka (2003–2006). It was exclusive to Ford and not shared with other manufacturers. All applications used the same 1.3L SOHC Euro 4 configuration.
Limited tuning potential exists due to SOHC architecture and modest internals. ECU remaps yield only ~3–5 kW gains. Forced induction is not recommended without extensive modification. Most owners retain stock tuning for reliability and economy.
In a Fiesta 1.3i, typical consumption is ~7.8 L/100km (city) and ~5.2 L/100km (highway), or about 36 mpg UK combined. Real-world mixed driving yields 32–40 mpg (UK), depending on condition and driving style.
No. The Ford NA2A is a non-interference engine. If the timing chain fails, the pistons will not contact the valves, preventing catastrophic internal damage—though the engine will still stall and require repair.
Ford specifies SAE 5W-30 oil meeting WSS-M2C913-B (or newer equivalent). This ensures proper cam lubrication and sludge control. Change every 10,000 km or 12 months, whichever comes first.
Comprehensive technical documentation and regulatory references
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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
Type-approval guidance and documentation.
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