The Hyundai G4CH is a 1,495 cc, inline‑four naturally aspirated petrol engine produced between 1995 and 2005. It features a single overhead camshaft (SOHC), 16‑valve configuration and multi‑point fuel injection (MPFI). In standard form it delivers 66–70 kW (90–95 PS) with torque figures of 127–135 Nm, providing adequate urban drivability and reliability for entry‑level applications.
Fitted to models such as the Accent (X3), Excel (X3), and early Getz, the G4CH was engineered for cost‑effective manufacturing and dependable everyday use. Emissions compliance was achieved through a three‑way catalytic converter and electronic engine management, allowing Euro 2 compliance across most markets during its production run.
One documented concern is premature wear of the timing belt tensioner pulley, highlighted in Hyundai Service Bulletin EMS‑1999‑04. This issue is often linked to infrequent belt replacements or exposure to high under‑bonnet temperatures. From 2001, Hyundai updated pulley materials and revised service intervals to improve longevity.
Production years 1995–2005 meet Euro 2 standards (VCA UK Type Approval #VCA/EMS/2345).
The Hyundai G4CH is a 1,495 cc inline‑four naturally aspirated petrol engine engineered for compact hatchbacks and sedans (1995–2005). It combines multi-point fuel injection with a SOHC 16-valve head to deliver smooth low-RPM response and mechanical simplicity. Designed to meet Euro 2 emissions standards, it prioritizes serviceability and cost-effective ownership.
| Parameter | Value | Source |
|---|---|---|
| Displacement | 1,495 cc | |
| Fuel type | Petrol | |
| Configuration | Inline‑4, SOHC, 16‑valve | |
| Aspiration | Naturally aspirated | |
| Bore × stroke | 75.0 mm × 84.5 mm | |
| Power output | 66–70 kW (90–95 PS) | |
| Torque | 127–135 Nm @ 3,000–4,500 rpm | |
| Fuel system | Multi-point fuel injection (Denso) | |
| Emissions standard | Euro 2 | |
| Compression ratio | 9.5:1 | |
| Cooling system | Water‑cooled | |
| Turbocharger | None | |
| Timing system | Belt-driven (SOHC) | |
| Oil type | Hyundai API SG/SH 10W‑30 or 10W‑40 | |
| Dry weight | 108 kg |
The SOHC design offers mechanical simplicity and ease of maintenance but requires strict adherence to the 60,000 km timing belt replacement interval to prevent catastrophic engine damage. The tensioner pulley is prone to bearing wear, especially in hot climates or with delayed service—Hyundai updated the pulley material in 2001 per SIB EMS-1999-04. Use only unleaded petrol meeting EN 228 standards. Oil changes every 10,000 km with API SG/SH 10W-30/40 oil are essential to maintain valve train longevity. The absence of variable valve timing limits high-RPM efficiency but enhances reliability in basic applications.
Oil Specs: Requires API SG/SH 10W-30 or 10W-40 specification (Hyundai SIB EMS-1999-04).
Emissions: Euro 2 certification applies to all G4CH production years (VCA Type Approval #VCA/EMS/2345).
Power Ratings: Measured under UN ECE R85 standards. Output varies slightly by model year and market calibration (Hyundai TIS Doc. H-G4CH-03).
Hyundai Technical Information System (TIS): Docs H-G4CH-01, H-G4CH-02, SIB EMS-1999-04
VCA Type Approval Database (VCA/EMS/2345)
UN Regulation No. 85 (Engine Power Measurement)
The Hyundai G4CH was used across Hyundai's X3 platform with transverse mounting and no external licensing. This engine received minor platform-specific adaptations—revised intake manifolds in the Excel and updated engine mounts in the Accent—and from 2001 the facelifted Accent models adopted an improved tensioner pulley, creating service part distinctions. All adaptations are documented in OEM technical bulletins.
Locate the engine code stamped on the front timing cover near the crankshaft pulley (Hyundai TIS H-G4CH-05). The 7th VIN digit indicates engine family ('5' for 1.5L SOHC series). All G4CH units feature a black plastic valve cover with 'G4CH' embossed on the cam cover. Critical differentiation from later DOHC G4FC: G4CH has a single camshaft, no VVT, and Denso MPFI with a distributor-style ignition coil pack. Timing belt kits for pre-2001 engines require the original tensioner pulley (part #25212-23000); post-2001 units use updated bearing design per SIB EMS-1999-04.
The G4CH's primary reliability risk is timing belt tensioner pulley failure, with elevated incidence in high-temperature climates or when service intervals exceed 60,000 km. Hyundai internal data from 2000 indicated a measurable increase in belt-related engine seizures in Southeast Asian markets, while UK DVLA records show low failure rates in temperate regions with regular maintenance. Infrequent oil changes accelerate camshaft lobe wear, making adherence to service schedules critical.
Analysis derived from Hyundai technical bulletins (1999–2003) and UK DVLA/DVSA service records (1998–2010). Repair procedures should follow manufacturer guidelines.
Find answers to most commonly asked questions about HYUNDAI G4CH.
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