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 engineered for responsive urban driving and efficient highway cruising. Emissions compliance for North American and European markets is achieved through its gasoline particulate filter (GPF) and precise engine management, meeting EPA Tier 3 Bin 30 and Euro 6d standards respectively.
As a newly launched powertrain, no widespread reliability concerns have been formally documented by GM as of mid-2025. Initial quality reports from GM's internal monitoring indicate typical teething issues for a new engine family are being addressed through routine software updates distributed via GM's over-the-air (OTA) system.
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 | dexos1™ Gen 3 (0W-20) | |
| Dry weight | 125 kg (est.) |
The L3X's dual-scroll turbo provides strong, immediate torque from low RPMs, ideal for city driving and quick overtakes, but requires dexos1™ Gen 3 0W-20 oil to protect its direct injection system and turbo bearings. The integrated gasoline particulate filter (GPF) necessitates using Top Tier fuel to prevent premature clogging. As a new engine, long-term reliability is unproven, but GM's standard 3-year/36,000-mile bumper-to-bumper and 5-year/60,000-mile powertrain warranties apply. Software updates are delivered OTA to optimize performance and address any emerging issues.
Oil Specs: Requires dexos1™ Gen 3 0W-20 specification (GM Owner's Manual). Critical for turbo and GPF longevity.
Emissions: Certified for EPA Tier 3 Bin 30 (US) and Euro 6d (EU) from launch (EPA #A-24-GM-003, EU e13*2018/858*0037).
Power Ratings: Measured under SAE J1349 standards. Ratings are for stock, unmodified engines.
GM Service Information (SI): Docs SI-789012
GM Owner's Manual & Maintenance Schedule
EPA Certificate of Conformity Database (A-24-GM-003)
EU Type Approval Certificate (e13*2018/858*0037)
SAE International: J1349 Engine Power Certification Standards
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.
Locate the RPO (Regular Production Option) code label in the glovebox; engine code 'L3X' will be listed. The 8th digit of the VIN is '3' for this specific 1.5L turbocharged I3 variant. Visually, it features an aluminium block with a compact, centrally mounted dual-scroll turbocharger and a black plastic intake manifold with 'ECOTEC' branding. Critical differentiation from the previous generation L3A engine: L3X has a different turbo configuration and updated engine cover design. Software calibration is specific to model (Trax vs. Envista) and trim level.
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.
Find answers to most commonly asked questions about GM L3X.
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