The Hyundai G3LA is a 1,497 cc, inline‑four turbocharged petrol engine produced between 2017 and 2023. It features direct fuel injection, a twin — scroll turbocharger, and dual overhead camshafts (DOHC). In standard form it delivered 150 kW (204 PS) and 265 Nm of torque, engineered for responsive performance in compact and midsize applications.
Fitted to models such as the i30 N (PD), Veloster N, and Kona N, the G3LA was engineered for sporty driving dynamics with strong mi…
All production years 2017–2023 meet Euro 6d TEMP (2017–2020) and Euro 6d (2021–2023) emissions standards (VCA UK Type Approval #VCA/EMS/8912).
The Hyundai G3LA is a 1,497 cc inline‑four turbocharged petrol engine engineered for performance hatchbacks and crossovers (2017–2023). It combines direct injection with a twin-scroll turbocharger to deliver strong mid-range torque and high-rev responsiveness. Designed to meet Euro 6d TEMP and Euro 6d standards, it balances sporty performance with modern emissions control.
| Parameter | Value | Source |
|---|---|---|
Displacement | 1,497 cc | |
Fuel type | Petrol | |
Configuration | Inline‑4, DOHC, 16‑valve | |
Aspiration | Turbocharged | |
Bore × stroke | 77.0 mm × 80.0 mm | |
Power output | 150 kW (204 PS) | |
Torque | 265 Nm @ 1,500–4,500 rpm | |
Fuel system | Bosch HDP6 high-pressure direct injection (up to 350 bar) | |
Emissions standard | Euro 6d TEMP (2017–2020); Euro 6d (2021–2023) | |
Compression ratio | 10.0:1 | |
Cooling system | Water‑cooled | |
Turbocharger | Twin-scroll turbo (Honeywell Garrett) | |
Timing system | Chain (front‑mounted) | |
Oil type | Hyundai SP IV (ACEA C5, SAE 0W‑30) | |
Dry weight | 132 kg |
The Hyundai G3LA was used exclusively in Hyundai's N-line performance variants with transverse mounting and motorsport-derived tuning. This engine received platform-specific cooling upgrades—enhanced oil coolers in the i30 N, reinforced mounts in the Kona N, and revised exhaust routing in the Veloster N—and from 2021 the facelifted i30 N received updated HPFP drive geometry, creating minor service part interchange limits. All adaptations are documented in OEM technical bulletins.
The G3LA's primary reliability risk is high-pressure fuel pump (HPFP) cam lobe wear, with elevated incidence in vehicles using RON 95 fuel under aggressive driving or operating in high-temperature climates. Hyundai internal data from 2022 indicated up to 7% of pre-2021 engines required HPFP or camshaft replacement before 80,000 km, while UK DVSA records show GPF-related warning lights rising after 60,000 km in urban-driven examples. Aggressive driving without proper warm-up and poor fuel quality accelerate wear, making fuel specification and maintenance adherence critical.
Analysis derived from Hyundai technical bulletins (2019–2023) and UK DVSA failure statistics (2020–2023). Repair procedures should follow manufacturer guidelines.
The most common questions about engine codes, what they mean, how to find them and how this database works
The G3LA offers strong performance and refinement, but pre-2021 models have known HPFP cam lobe wear concerns under aggressive use. Post-2021 revisions improved fuel system durability. With strict adherence to oil changes (10K–15K km), use of RON 98 fuel, and proper warm-up, well-maintained examples can exceed 150,000 km without major issues.
Top issues include HPFP cam lobe wear (especially pre-2021), GPF clogging from short trips, turbo wastegate rattle, and intake valve carbon buildup. These are documented in Hyundai service bulletins HST‑19‑034 and HST‑21‑012, with clear OEM repair protocols.
The G3LA powered the i30 N (PD, 2017–2023), Veloster N (2018–2021), and Kona N (2021–2023) in high-performance 2.0 T-GDi guise. All applications are transverse, Euro 6d-compliant, and exclusive to N-line performance variants.
Yes. Stage 1 ECU remaps typically yield +30–40 kW and +60–80 Nm safely, as the forged internals and oil squirters support increased load. However, HPFP and cam lobe condition must be verified first—tuning without HPFP upgrade risks accelerated wear. Always use RON 98 fuel and supporting cooling upgrades.
In an i30 N, expect ~9.5 L/100km city and ~6.8 L/100km highway, or ~33 mpg UK combined. Real-world economy depends heavily on driving style—track use can exceed 12 L/100km, while gentle driving may achieve 8.0 L/100km.
Yes. The G3LA is an interference design. Timing chain failure—though rare due to front-mounted robust chain—could cause piston-to-valve contact. No widespread timing issues reported, but chain tensioner inspection is advised at 120,000 km.
Hyundai specifies ACEA C5-compliant 0W‑30 synthetic oil meeting SP IV standard. This low-SAPS formulation protects the GPF and ensures HPFP cam lubrication. Oil changes every 10,000–15,000 km are critical for longevity.
Comprehensive technical documentation and regulatory references
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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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