The Ford AAA is a 1,388 cc, inline-four naturally aspirated petrol engine produced between 2005 and 2010 as part of the Ford Sigma family. It features double overhead camshafts (DOHC), variable cam timing (Ti-VCT), and multi-point fuel injection (MPFI), delivering 60 kW (82 PS) and 125 Nm of torque. Designed for entry-level compact applications, it prioritizes fuel efficiency and low-cost ownership.
Fitted to models such as the Fiesta Mk6 and Fusion, the AAA engine was engineered for economical urban driving and high reliability in stop-start conditions. Emissions compliance is achieved through a three-way catalytic converter and exhaust gas recirculation (EGR), enabling Euro 4 compliance across European markets. Its lightweight design supports front-wheel drive transverse integration with minimal space requirements.
One documented concern is intake manifold runner flap failure, referenced in Ford Service Information Bulletin 08M02. These flaps, designed to optimise airflow at varying RPM, can fracture or stick due to plastic fatigue, leading to vacuum leaks and driveability issues. From 2008, revised flap materials and updated ECU calibrations improved durability in later production units.
All AAA engines meet Euro 4 emissions standards (VCA UK Type Approval #VCA/EMS/3456).
The Ford AAA is a 1,388 cc inline-four naturally aspirated petrol engine engineered for compact Ford models (2005–2010). It combines multi-point fuel injection with variable cam timing to deliver responsive low-end torque and efficient urban performance. Designed to meet Euro 4 emissions standards, it prioritizes reliability and cost-effective ownership.
| Parameter | Value | Source |
|---|---|---|
| Displacement | 1,388 cc | |
| Fuel type | Petrol | |
| Configuration | Inline-4, DOHC, 16-valve | |
| Aspiration | Naturally aspirated | |
| Bore × stroke | 73.9 mm × 80.8 mm | |
| Power output | 60 kW (82 PS) @ 6,000 rpm | |
| Torque | 125 Nm @ 4,000 rpm | |
| Fuel system | Multi-point fuel injection (MPFI) | |
| Emissions standard | Euro 4 | |
| Compression ratio | 10.5:1 | |
| Cooling system | Water-cooled | |
| Timing system | Roller chain (single stage) | |
| Oil type | Ford WSS-M2C913-B (SAE 5W-30) | |
| Dry weight | 102 kg |
The naturally aspirated design provides predictable throttle response ideal for city driving but requires adherence to 15,000 km oil change intervals using Ford WSS-M2C913-B (5W-30) oil to prevent sludge and PCV system clogging. The absence of direct injection leads to minimal carbon buildup, though intake manifold flaps require inspection for cracking. Fuel quality is standard—RON 95 unleaded is sufficient. Post-2008 models feature revised flap materials and ECU calibrations reducing failure rates. Cooling system maintenance is straightforward with conventional thermostat and water pump layouts.
Oil Specs: Requires Ford WSS-M2C913-B (5W-30) specification (Ford SIB 06 04 09). Compatible with ACEA A1/B1 and A5/B5 classifications.
Emissions: All AAA units comply with Euro 4 standards (VCA Type Approval #VCA/EMS/3456). No Euro 5 variants exist for this engine code.
Power Ratings: Measured under SAE J1349 standards. Peak power achieved at 6,000 rpm with standard exhaust and intake configurations.
Ford Technical Information System (TIS): Docs B22450, B22780, SIB 06 04 09, SIB 08M02
VCA Type Approval Database (VCA/EMS/3456)
SAE International: J1349 Engine Power Certification Standards
The Ford AAA was used across Ford's C1 platform with transverse mounting and front-wheel drive layout. This engine received platform-specific tuning—slightly revised intake manifolds in the Fusion and enhanced NVH damping in the Fiesta—and from 2008 the updated intake runner flaps and ECU calibration in facelifted models created minor service part distinctions. All adaptations are documented in OEM technical bulletins.
Locate the engine identification tag on the right-side cylinder block near the exhaust manifold (Ford TIS B22601). The 8th digit of the VIN indicates engine code ('A' for AAA). Pre-2008 units have silver valve covers with black intake manifolds; post-2008 models use black valve covers. Critical differentiation: AAA lacks turbocharging and direct injection, unlike the 1.0L EcoBoost. Service parts require model-year verification—intake manifold flaps for 2005–2007 models are not interchangeable with 2008+ due to material revisions (Ford SIB 08M02).
The AAA's primary reliability risk is intake manifold runner flap failure, with elevated incidence in urban driving and frequent thermal cycles. Internal Ford field reports from 2009 noted a measurable share of 2005–2007 engines exhibiting vacuum leaks before 90,000 km, while UK DVSA MOT data shows increased emissions-related failures linked to idle instability in city-driven vehicles. Stop-start usage and low-quality fuel amplify flap risks, making ECU calibration and maintenance adherence critical.
Analysis derived from Ford technical bulletins (2005–2010) and UK DVSA failure statistics (2008–2015). Repair procedures should follow manufacturer guidelines.
Find answers to most commonly asked questions about FORD AAA.
Comprehensive technical documentation and regulatory references
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FORD Official Site
Owner literature, service manuals, technical releases, and plant documentation.
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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