The GM L3X is a 2,980 cc, turbocharged inline — three petrol engine introduced for the 2024 model year. It features direct fuel injection, a dual — scroll turbocharger, and an aluminium block and head. This compact, high — output engine generates 155 kW (208 hp) and 350 Nm (258 lb — ft) of torque, designed to offer a blend of efficiency and spirited performance in smaller GM platforms.
Fitted exclusively to the Chevrolet Trax and Buick Envista for global markets, the L3X was engi…
Production from 2024 meets EPA Tier 3 Bin 30 (US) and Euro 6d (EU) standards (EPA Certificate #A-24-GM-003, EU Type Approval e13*2018/858*0037).
The GM L3X is a 2,980 cc inline-three turbocharged petrol engine engineered for subcompact SUVs (2024-Present). It combines direct injection with a dual-scroll turbocharger to deliver responsive low-end torque and efficient operation. Designed to meet stringent global emissions standards, it balances urban agility with highway refinement.
| Parameter | Value | Source |
|---|---|---|
Displacement | 2,980 cc | |
Fuel type | Petrol (Gasoline) | |
Configuration | Inline-3, DOHC, 12-valve | |
Aspiration | Turbocharged (Dual-Scroll) | |
Bore × stroke | 86.0 mm × 86.0 mm | |
Power output | 155 kW (208 hp) @ 5,500 rpm | |
Torque | 350 Nm (258 lb-ft) @ 1,500-4,000 rpm | |
Fuel system | Direct Injection (SIDI) | |
Emissions standard | EPA Tier 3 Bin 30 / Euro 6d | |
Compression ratio | 10.0:1 | |
Cooling system | Water-cooled | |
Turbocharger | BorgWarner Dual-Scroll | |
Timing system | Chain-driven | |
Oil type | Refer to vehicle handbook / manufacturer specification | |
Dry weight | 125 kg (est.) |
The GM L3X was developed for GM's new global B-segment SUV platforms with transverse mounting. This engine features platform-specific engine mounts and accessory drives shared between the Chevrolet Trax and Buick Envista. No significant revisions have been documented since its 2024 launch, ensuring parts commonality across all current applications.
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The L3X, being a newly introduced engine, has no statistically significant failure modes documented by GM or NHTSA as of mid-2025. Internal GM quality control data from the first 12 months of production indicates a focus on resolving minor software glitches related to transmission shift logic and cold-start refinement, addressed via over-the-air updates. Adherence to the prescribed maintenance schedule using correct fluids is paramount for ensuring long-term durability of its turbocharger and direct injection system.
Analysis derived from GM technical bulletins (2024-2025) and preliminary NHTSA complaint data (2024-2025). 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
As a brand-new engine introduced in 2024, long-term reliability data is not yet available. However, it is built on GM's established Ecotec architecture and benefits from modern manufacturing and design. GM's standard 5-year/60,000-mile powertrain warranty provides coverage. Early indications from quality reports show no major systemic issues.
Currently, there are no widespread, common mechanical problems. The most frequently reported issues are minor software-related glitches affecting drivability, which GM resolves via over-the-air updates. Potential issues include GPF clogging from poor fuel quality and typical turbocharged engine traits like intercooler condensation.
The L3X 1.5L turbocharged inline-3 is currently used exclusively in the 2024 and newer Chevrolet Trax and Buick Envista subcompact SUVs. It is the standard and only engine offered for these global models across all trim levels.
Yes, the L3X has tuning potential. Its robust design, featuring a dual-scroll turbo and direct injection, can handle moderate power increases. Simple ECU tunes are expected to yield 20-30+ hp gains. More significant modifications would require upgraded turbo, intercooler, and fuel system components. Warranty implications should be considered.
The L3X offers good fuel economy for its power output. In the FWD Chevrolet Trax, EPA estimates are 28 mpg city and 32 mpg highway. The Buick Envista, with its slightly different gearing and aerodynamics, is rated at 28 mpg city and 31 mpg highway. Real-world results will vary based on driving style and conditions.
Yes. Like virtually all modern DOHC engines, the L3X is an interference design. If the timing chain were to fail (an extremely rare event with proper maintenance), the pistons would collide with the valves, causing catastrophic engine damage. The timing chain is designed to last the life of the engine.
GM mandates dexos1™ Gen 3 full synthetic oil, specifically 0W-20 viscosity. This low-viscosity oil is crucial for optimal fuel economy, cold-start performance, and protecting the turbocharger's bearings. Using any other oil type or viscosity can void the warranty and lead to premature engine wear.
Comprehensive technical documentation and regulatory references
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Regulatory Stability
EU regulations are referenced using CELEX identifiers for long-term stability.
EUR-Lex
EU emissions and type-approval regulations (e.g., CELEX:32007R0715, CELEX:32017R1151).
GOV.UK: Vehicle Approval & V5C
UK vehicle approval processes, import rules, and MoT guidance.
DVLA: Engine Changes & MoT
Official guidance on engine swaps and inspection implications.
Vehicle Certification Agency (VCA)
UK type-approval authority for automotive products.
Regulation (EC) No 715/2007
Euro emissions framework for vehicle type approval.
Commission Regulation (EU) 2017/1151
WLTP and RDE testing procedures for emissions certification.
GOV.UK: Vehicle Approval
UK compliance and certification requirements for imported and modified vehicles.
VCA Certification Portal
Type-approval guidance and documentation.
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