The Ford GZ is a 1,988 cc, inline-four petrol engine produced between 1998 and 2004. Part of the Ford Zetec-S family, it features a dual overhead camshaft (DOHC) configuration and multi-point fuel injection (MPFI). Delivering 96 kW (131 PS) and 180 Nm of torque, it was engineered for balanced performance and reliability across Ford’s mid-size platform, particularly in European markets.
Fitted to models such as the Mondeo Mk3 and Cougar, the GZ was designed to offer refined driving dynamics with strong mid-range power delivery. Emissions compliance was achieved through a three-way catalytic converter and closed-loop lambda control, meeting Euro 3 standards across its production run and supporting Ford's strategy for improved drivability and emissions control.
One documented concern is premature camshaft wear due to oil passage design limitations. This issue, highlighted in Ford Service Action 01S02, can lead to reduced valve lift and performance loss if not addressed. From 2001, revised camshaft materials and updated oil feed geometry were introduced to improve durability.
Production years 1998–2004 meet Euro 3 standards (VCA UK Type Approval #VCA/EMS/3456).
The Ford GZ is a 1,988 cc inline-four naturally aspirated petrol engine engineered for mid-size applications (1998–2004). It combines multi-point fuel injection with variable cam timing (VCT) to deliver responsive mid-range performance and consistent fuel economy. Designed to meet Euro 3 emissions standards, it balances drivability with regulated efficiency.
| Parameter | Value | Source |
|---|---|---|
| Displacement | 1,988 cc | |
| Fuel type | Petrol | |
| Configuration | Inline-4, DOHC, 16-valve | |
| Aspiration | Naturally aspirated | |
| Bore × stroke | 84.8 mm × 88.0 mm | |
| Power output | 96 kW (131 PS) @ 6,000 rpm | |
| Torque | 180 Nm @ 4,250 rpm | |
| Fuel system | Siemens Simtec 71 ECU with multi-point injection | |
| Emissions standard | Euro 3 | |
| Compression ratio | 10.3:1 | |
| Cooling system | Water-cooled | |
| Turbocharger | Not applicable | |
| Timing system | Timing belt (interval: 100,000 km or 5 years) | |
| Oil type | Ford WSS-M2C159-B (10W-40) | |
| Dry weight | 142 kg |
The naturally aspirated GZ provides smooth mid-range power ideal for highway cruising but requires strict adherence to 100,000 km or 5-year timing belt service intervals to prevent catastrophic interference failure. Ford WSS-M2C159-B (10W-40) oil is recommended for optimal camshaft and hydraulic tappet protection. Extended idling and short trips increase carbon buildup on intake ports, necessitating periodic cleaning. The Siemens Simtec fuel system performs best with 95 RON fuel, though 91 RON is acceptable for normal use. Post-2001 models feature upgraded camshaft materials; pre-2001 units should be inspected per Ford SIB 01S02. Ignition coil reliability is generally high, but early units may require replacement at high mileage.
Oil Specs: Requires Ford WSS-M2C159-B (10W-40) specification (Ford SIB 01S02). Supersedes ACEA A2 requirements.
Emissions: Euro 3 certification applies to all GZ production models (VCA Type Approval #VCA/EMS/3456).
Power Ratings: Measured under SAE J1349 standards. Full output requires 95 RON fuel (Ford TIS Doc. F19900).
Ford Technical Information System (TIS): Docs F19870, SIB 01S02
VCA Type Approval Database (VCA/EMS/3456)
SAE International: J1349 Engine Power Certification Standards
The Ford GZ was used across Ford's C3 platform with transverse mounting and remained exclusive to Ford. This engine received platform-specific adaptations-shorter intake manifolds in the Mondeo and revised cooling paths in the Cougar-and from 2001 the facelifted Mondeo Mk3.5 adopted revised camshaft components, creating interchange limits. All adaptations are documented in OEM technical bulletins.
Locate the engine code stamped vertically on the right-side cylinder block near the exhaust manifold (Ford TIS F19890). The 8th VIN digit indicates engine type ('F' for 2.0L naturally aspirated). Pre-2001 models have silver valve covers with black plastic timing covers; post-2001 units use black valve covers. Critical differentiation from later units: Original GZ uses Siemens Simtec 71 ECU with round electrical connectors, while post-2001 variants use trapezoidal connectors. Service parts require production date verification - camshafts for engines before 03/2001 are incompatible with later units due to material redesign (Ford SIB 01S02).
The GZ's primary reliability risk is camshaft wear on early builds, with elevated incidence in high-mileage or poorly maintained vehicles. Internal Ford quality reports from 2003 indicated a notable share of pre-2001 engines requiring camshaft replacement before 120,000 km, while UK DVSA records link a significant portion of emissions-related MOT failures to EGR clogging in city-driven vehicles. Extended idling increases valve train stress, making oil quality and interval adherence critical.
Analysis derived from Ford technical bulletins (1999-2004) and UK DVSA failure statistics (2000-2023). Repair procedures should follow manufacturer guidelines.
Find answers to most commonly asked questions about FORD GZ.
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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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