The GM LIL is a 1,399 cc, inline‑three turbocharged petrol engine produced between 2010 and 2015. It features a dual overhead camshaft (DOHC) design with variable valve timing (VVT) and direct fuel injection, delivering 92 kW (125 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 Corsa and Adam, the LIL was engineered for agile city driving and re…
All LIL engines meet US EPA Tier 2 Bin 5 emissions standards (EPA Certificate of Conformity #A-69-10). No Euro standard compliance applies as it was not offered in European markets.
The GM LIL is a 1,399 cc inline‑three turbocharged petrol engine engineered for supermini and city cars (2010-2015). 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 | 1,399 cc | |
Fuel type | Petrol | |
Configuration | Inline‑3, DOHC, 12‑valve | |
Aspiration | Turbocharged | |
Bore × stroke | 74.0 mm × 81.3 mm | |
Power output | 92 kW (125 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 | 98 kg |
The GM LIL 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 LIL's primary reliability risk is high-pressure fuel pump failure, with a documented incidence in early production vehicles. GM's own service data and bulletin 10345B confirm this was a component-related issue, not isolated to specific usage. Vehicles using poor-quality fuel or infrequent filter changes are at greater risk, making fuel quality critical.
Analysis derived from GM technical bulletins (2010-2015) and NHTSA investigation data. 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 LIL is an efficient and peppy engine, but its long-term reliability hinges on addressing the known high-pressure fuel pump issue. Once the updated pump is installed, the engine's core is robust. Strict adherence to the oil change schedule using Dexos1 oil and using high-quality, Top Tier gasoline is paramount for longevity, as is periodic intake valve cleaning.
The most common and critical problem is high-pressure fuel pump failure. Other frequent issues include intake valve carbon buildup, timing chain tensioner wear, and coolant leaks from the thermostat housing. These are extensively documented in GM service bulletins and owner reports.
The LIL was used in GM's compact European lineup from 2010 to 2015. This includes the Opel/Vauxhall Corsa and the Opel/Vauxhall Adam. It was not used in North American models.
Yes, the LIL responds well to tuning. An ECU remap (‘tune’) is the most common modification, often yielding significant power and torque gains (+20-40+ HP) without hardware changes. Supporting mods like an upgraded intercooler and intake are recommended for higher power levels to ensure reliability.
Fuel economy is excellent for a turbocharged engine. Expect around 38-42 mpg (US) in combined city/highway driving. Highway cruising can yield 45-50 mpg (US), while city driving will be lower, around 32-35 mpg (US).
Yes. The LIL is an interference engine. This means that if the timing chain were to fail or jump, the pistons and valves would collide, causing catastrophic internal engine damage. This makes addressing the tensioner issue promptly very important.
GM mandates the use of Dexos1 specification oil, typically in a 5W-30 viscosity. This oil is specifically formulated for GM's turbocharged, direct-injection engines. Using the correct oil and changing it at the recommended intervals (every 7,500 miles) is critical for engine health, especially for the timing chain system.
Comprehensive technical documentation and regulatory references
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GM Official Site
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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
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