The Hyundai G4EK is a 1,495 cc, inline‑four naturally aspirated petrol engine produced between 1995 and 2000. It features a SOHC 12‑valve layout with multi‑point fuel injection (MPFI), delivering 66 kW (90 PS) and 130 Nm of torque. Its cast‑iron block and simple valvetrain prioritise cost‑effectiveness and ease of repair over performance or refinement.
Fitted primarily to the Accent (X3), Excel (X3), and early Coupe models, the G4EK was engineered for entry‑level urban mobility where fuel economy and mechanical simplicity were paramount. Emissions compliance was achieved through a three‑way catalytic converter and basic exhaust gas recirculation (EGR), allowing adherence to Euro 2 standards across most European markets.
One documented concern is premature wear of the distributor‑driven ignition system, highlighted in Hyundai Technical Service Bulletin TSB‑96‑G4EK‑02. This stems from inadequate lubrication of the distributor shaft bushing under high‑temperature conditions, leading to erratic spark timing and misfires. From 1998, revised bushing materials were introduced in production.
Hyundai
Production years 1995–2000 meet Euro 2 standards only (VCA UK Type Approval #VCA/EMS/2345). No Euro 3 variants were produced.
The Hyundai G4EK is a 1,495 cc inline‑four naturally aspirated petrol engine engineered for compact hatchbacks and coupes (1995–2000). It combines a cast‑iron block with SOHC 12‑valve architecture and multi‑point fuel injection to deliver dependable urban performance and straightforward maintenance. Designed to meet Euro 2 emissions standards, it prioritises mechanical simplicity over sophistication.
| Parameter | Value | Source |
|---|---|---|
| Displacement | 1,495 cc | |
| Fuel type | Petrol | |
| Configuration | Inline‑4, SOHC, 12‑valve | |
| Aspiration | Naturally aspirated | |
| Bore × stroke | 75.0 mm × 84.5 mm | |
| Power output | 66 kW (90 PS) @ 5,500 rpm | |
| Torque | 130 Nm @ 3,000 rpm | |
| Fuel system | Multi‑point fuel injection (MPFI) | |
| Emissions standard | Euro 2 | |
| Compression ratio | 9.5:1 | |
| Cooling system | Water‑cooled | |
| Turbocharger | None | |
| Timing system | Belt‑driven SOHC | |
| Oil type | API SG/SH (SAE 10W‑30 or 10W‑40) | |
| Dry weight | 114 kg |
The belt-driven SOHC and MPFI system provide excellent serviceability but result in modest power and higher fuel consumption compared to modern engines. Timing belt replacement every 60,000 km is critical to prevent valve damage in this interference design. The distributor-based ignition requires periodic rotor/cap replacement and bushing inspection per TSB‑96‑G4EK‑02. Use only EN 228-compliant petrol; ethanol blends above E5 may degrade fuel lines and seals. The engine lacks variable valve timing or advanced emissions controls, simplifying repairs but limiting compliance in low-emission zones.
Oil Specs: Requires API SG/SH (10W-30/40) specification (Hyundai Owner’s Manual 1996). Not compatible with modern low-viscosity oils.
Emissions: Euro 2 certification applies to all G4EK production (1995–2000) (VCA Type Approval #VCA/EMS/2345). No Euro 3 compliance achieved.
Power Ratings: Measured under ISO 1585 standards. Output consistent across all model applications (Hyundai PT-2017).
Hyundai Technical Information System (TIS): Docs G4EK‑ENG‑01, G4EK‑FUEL‑02
VCA Type Approval Database (VCA/EMS/2345)
ISO 1585: Road vehicles — Engine test code
The Hyundai G4EK was used across Hyundai's X3 platform with transverse mounting and no external licensing. This engine received platform-specific adaptations—reinforced mounts in the Accent sedan and modified airbox routing in the Coupe—but no mid-cycle facelift altered core interchangeability. All adaptations are documented in OEM technical bulletins.
Locate the engine code stamped on the front timing cover near the crankshaft pulley (Hyundai TIS G4EK‑ID‑01). The 7th VIN digit is 'G' for G4-series petrol variants. Visual identification: black cast-iron block, single valve cover with distributor on right side. Differentiate from G4AL: G4EK is 1.5L with 12 valves; G4AL is 1.3L. No balance shafts present.
The G4EK's primary reliability risk is timing belt failure due to infrequent replacement, with elevated incidence in high-mileage urban vehicles. Hyundai internal service data (2001) indicated bent valves in over 22% of engines exceeding 80,000 km without belt service, while UK DVSA records show minimal emissions-related MOT failures due to the engine's basic Euro 2 compliance. Distributor wear and oil sludge further accelerate ignition and valve train degradation, making service discipline critical.
Analysis derived from Hyundai technical bulletins (1996–2000) and UK DVSA failure statistics (2005–2023). Repair procedures should follow manufacturer guidelines.
Find answers to most commonly asked questions about HYUNDAI G4EK.
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DVLA: Engine Changes & MoT
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Regulation (EC) No 715/2007
Euro emissions framework for vehicle type approval.
Commission Regulation (EU) 2017/1151
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