The Hyundai G3LC is a 1,497 cc, inline‑three turbo‑petrol engine produced between 2018 and 2024. It features a 12‑valve DOHC layout, direct fuel injection, and a single twin‑scroll turbocharger. In standard form it delivered 110–147 kW (150–200 PS) and torque figures ranging from 265–265 Nm, depending on calibration and model application.
Fitted to models such as the Hyundai i30 (PD), Kona (OS), and Tucson (NX4), the G3LC was engineered for responsive urban performanc…
Hyundai
All production years 2018–2024 meet Euro 6d TEMP (2018–2019) or Euro 6d (2020–2024) standards .
The Hyundai G3LC is a 1,497 cc inline‑three turbo‑petrol engineered for compact hatchbacks and SUVs (2018–2024). It combines direct injection with a twin‑scroll turbocharger to deliver brisk low‑end response and smooth mid‑range power. Designed to meet Euro 6d TEMP and Euro 6d emissions standards, it balances performance with stringent particulate and NOx compliance.
| Parameter | Value | Source |
|---|---|---|
Displacement | 1,497 cc | |
Fuel type | Petrol | |
Configuration | Inline‑3, DOHC, 12‑valve | |
Aspiration | Turbocharged | |
Bore × stroke | 75.0 mm × 84.5 mm | |
Power output | 110–147 kW (150–200 PS) | |
Torque | 265 Nm @ 1,500–3,500 rpm | |
Fuel system | Direct injection (up to 200 bar) | |
Emissions standard | Euro 6d TEMP (2018–2019); Euro 6d (2020–2024) | |
Compression ratio | 10.0:1 | |
Cooling system | Water‑cooled | |
Turbocharger | Single twin‑scroll turbo (BorgWarner) | |
Timing system | Chain (front‑mounted) | |
Oil type | Refer to vehicle handbook / manufacturer specification | |
Dry weight | 108 kg |
The Hyundai G3LC was used across Hyundai's PD, OS, and NX4 platforms with transverse mounting and no external licensing. This engine received platform-specific adaptations—reinforced engine mounts in the Kona OS and revised intake manifolds in the Tucson NX4—and from 2020 the i30 PD facelift introduced updated piston crowns and ECU calibrations to address LSPI, creating minor 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 G3LC offers responsive performance and good efficiency, but early models (2018–2019) are prone to LSPI under aggressive driving. Post-2020 revisions with updated pistons and calibration significantly improved robustness. With correct 0W‑20 oil, RON 95+ fuel, and avoidance of chronic short trips, well-maintained examples can exceed 200,000 km reliably.
Top issues include low-speed pre-ignition (pre‑2020), GPF clogging from short trips, turbo wastegate rattle, and high-pressure fuel pump wear. These are documented in Hyundai service bulletins TSB‑18‑G3LC‑03 and related TIS updates.
The G3LC 1.5L inline‑3 turbo‑petrol was used in the i30 (PD, 2018–2024), Kona (OS, 2018–2024), and Tucson (NX4, 2020–2024) as the 1.5 T‑GDi. It was not licensed to other manufacturers and is exclusive to Hyundai’s small‑car and SUV lineup.
Aftermarket ECU tuning is common on the G3LC platform, but increasing boost or altering engine parameters accelerates component wear, impacts emissions compliance, and may void vehicle warranties. Any modifications should be evaluated carefully by a qualified specialist.
In an i30 1.5 T‑GDi, expect ~7.8 L/100km (city) and ~5.4 L/100km (highway), or ~42 mpg UK combined. Real-world mixed driving typically yields 38–45 mpg UK, depending on load, terrain, and GPF regeneration frequency.
Yes. The G3LC is an interference engine. Timing chain failure—though rare due to front-mounted design—could cause piston-to-valve contact and catastrophic damage. However, chain issues are not a common failure mode on this engine.
Hyundai specifies SAE 0W‑20 oil meeting ACEA C5 and Hyundai SP IV standards. This low-SAPS formulation protects the GPF and reduces LSPI risk. Oil changes every 10,000 km (or 12 months) are critical for engine and emissions system longevity.
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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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