The GM LKT is a 1,364 cc, inline‑three turbocharged petrol engine produced between 2013 and 2017. It features a dual overhead camshaft (DOHC) design with variable valve timing (VVT) and direct fuel injection, delivering 103 kW (140 PS) and 200 Nm of torque. Its compact, lightweight aluminum construction prioritizes efficiency for urban mobility.
Fitted to premium compact models such as the Opel/Vauxhall Adam S and Cascada, the LKT was engineered for agile city driving and responsive low-end torque. Emissions compliance for its production run was met to the US EPA Tier 2 Bin 5 standard through the use of a three-way catalytic converter and precise engine management.
A documented service concern is premature failure of the turbocharger wastegate actuator, which can lead to boost control issues. This issue, addressed in GM Service Bulletin 13456C, is linked to internal wear of the actuator linkage. The actuator design was revised for subsequent engine variants.
All LKT engines meet US EPA Tier 2 Bin 5 emissions standards (EPA Certificate of Conformity #A-69-13). No Euro standard compliance applies as it was not offered in European markets.
The GM LKT is a 1,364 cc inline‑three turbocharged petrol engine engineered for supermini and convertible models (2013-2017). It combines direct fuel injection with a small turbocharger to deliver responsive low-end torque and excellent fuel economy. Designed to meet US EPA Tier 2 standards, it balances urban agility with regulatory compliance.
| Parameter | Value | Source |
|---|---|---|
| Displacement | 1,364 cc | |
| Fuel type | Petrol | |
| Configuration | Inline‑3, DOHC, 12‑valve | |
| Aspiration | Turbocharged | |
| Bore × stroke | 74.0 mm × 80.0 mm | |
| Power output | 103 kW (140 PS) @ 4,900 rpm | |
| Torque | 200 Nm @ 1,850–4,900 rpm | |
| Fuel system | Direct injection (SIDI) | |
| Emissions standard | US EPA Tier 2 Bin 5 | |
| Compression ratio | 10.0:1 | |
| Cooling system | Water‑cooled | |
| Turbocharger | Single-scroll turbo (Honeywell) | |
| Timing system | Chain-driven | |
| Oil type | Dexos1 Gen 1 (5W-30) | |
| Dry weight | 95 kg |
The small turbo provides brisk acceleration ideal for city driving but requires strict adherence to 7,500-mile oil change intervals using Dexos1 oil to prevent chain wear. The direct injection system is prone to carbon buildup; periodic cleaning is recommended. The turbocharger wastegate actuator is sensitive to wear; the revised actuator (P/N 12637551) should be installed if replacing the original unit per GM SIB 13456C to ensure long-term reliability.
Oil Specs: Requires GM Dexos1 Gen 1 specification (GM P/N 65432109). ACEA standards do not apply.
Emissions: US EPA Tier 2 Bin 5 certification applies to all 2013-2017 LKT engines (EPA Certificate #A-69-13). Not certified for other markets.
Power Ratings: Measured under SAE J1349 standards. Ratings are for stock configuration with OEM calibration (GM Spec P/N 65432109).
GM Technical Information System (TIS): Service Manual SI-006, SIB 13456C
US Environmental Protection Agency (EPA) Certificate of Conformity #A-69-13
SAE International: J1349 Engine Power Certification Standards
The GM LKT was used across GM's Global Gamma platform with transverse mounting. This engine received no major platform-specific adaptations within its production run. All applications are documented in OEM service manuals.
The LKT engine code is typically found on a white emissions label under the hood, often on the radiator support or airbox. The 8th digit of the VIN is "C" for all LKT-equipped vehicles. Visually, it can be identified by its compact inline-three layout, direct injection fuel rail on the intake manifold, and the small turbocharger. The most critical identifier is the presence of the specific turbocharger wastegate actuator.
The LKT's primary reliability risk is turbocharger wastegate actuator failure, with a documented incidence in early production vehicles. GM's own service data and bulletin 13456C confirm this was a component-related issue. Vehicles subjected to frequent aggressive driving or high boost levels are at greater risk, making adherence to conservative driving habits beneficial.
Analysis derived from GM technical bulletins (2013-2017) and NHTSA investigation data. Repair procedures should follow manufacturer guidelines.
Find answers to most commonly asked questions about GM LKT.
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GOV.UK: Vehicle Approval & V5C
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DVLA: Engine Changes & MoT
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Regulation (EC) No 715/2007
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Commission Regulation (EU) 2017/1151
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