The GM LFY – Petrol is a 1,490 cc, inline‑three turbocharged engine produced between 2016 and 2020. It features a dual overhead camshaft (DOHC) design with variable valve timing (VVT) and direct fuel injection, delivering a balance of efficiency and responsiveness for its compact segment. In standard form, it produced 107 kW (145 PS) and 230 Nm of torque, enabling brisk acceleration from its small displacement.
Fitted primarily to the Opel/Vauxhall Astra K and Crossland…
Production years 2016–2020 meet Euro 6 standards (VCA UK Type Approval #VCA/EMS/8901).
The GM LFY – Petrol is a 1,490 cc inline‑three turbocharged engine engineered for compact vehicles (2016-2020). It combines direct fuel injection with a small, single-scroll turbocharger to deliver responsive low-end torque and competitive fuel economy. Designed to meet Euro 6 standards, it offers a compelling blend of performance and efficiency for its class.
| Parameter | Value | Source |
|---|---|---|
Displacement | 1,490 cc | |
Fuel type | Petrol | |
Configuration | Inline‑3, DOHC, 12‑valve | |
Aspiration | Turbocharged | |
Bore × stroke | 74.0 mm × 86.6 mm | |
Power output | 107 kW (145 PS) @ 5,000-5,500 rpm | |
Torque | 230 Nm @ 1,750-4,000 rpm | |
Fuel system | Gasoline Direct Injection (GDI) | |
Emissions standard | Euro 6 | |
Compression ratio | 10.0:1 | |
Cooling system | Water‑cooled | |
Turbocharger | Single-scroll (Honeywell) | |
Timing system | Chain-driven | |
Oil type | GM Dexos 2 (SAE 5W‑30) | |
Dry weight | 108 kg |
The GM LFY – Petrol was used across GM's global Delta platform with transverse mounting. This engine received platform-specific adaptations-including unique engine mounts for the Opel Crossland and revised intake manifolds for the Opel Astra-creating minor interchange considerations. All adaptations are documented in OEM technical bulletins.
The LFY – Petrol's primary reliability consideration is intake valve carbon buildup, a systemic trait of its direct-injection design. GM internal service data indicated a notable rate of cleaning procedures after 70,000 km, while owner reports frequently cite turbocharger wastegate issues. Adherence to the specified oil type and proactive maintenance are key to long-term performance.
Analysis derived from GM technical bulletins (2016-2020) and aggregated owner-reported failure data (2017-2023). 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 GM LFY – Petrol is generally reliable if maintained properly. Its main known issue is intake valve carbon buildup, which is manageable with periodic cleaning. The turbocharger and timing chain are typically robust. Using the correct GM Dexos 2 oil and adhering to service intervals is crucial for preventing major issues. Many examples exceed 150,000 km without significant problems.
The most frequent issues are carbon buildup on intake valves (causing rough idle), turbocharger wastegate sticking (affecting boost), and high-pressure fuel pump failure. Oil leaks from the cam cover are also common as the engine ages. These are well-documented in GM service information and forums.
This 1.5L turbo engine was used in the Opel/Vauxhall Astra K (2016-2020) and the Opel Crossland (2017-2020). It was a key performance engine for GM's compact car lineup during this period, offering a fun driving experience in an efficient package.
Yes, the LFY responds well to ECU remapping. Stage 1 tunes can reliably produce around 125-130 kW (170-175 PS) and 260-270 Nm of torque by adjusting boost pressure and ignition timing. The stock internals are strong enough for these gains. More power requires upgraded turbo and injectors.
Real-world fuel economy is around 6.5-7.5 L/100km (38-43 mpg UK) combined, depending on the vehicle and driving style. Highway cruising can achieve 5.5 L/100km (51 mpg UK), while aggressive city driving may consume 8.5 L/100km (33 mpg UK). It's efficient for a turbocharged performance engine.
Yes. The GM LFY – Petrol is an interference engine. If the timing chain fails or jumps, the pistons will collide with the open valves, causing catastrophic internal damage. This underscores the importance of addressing any timing chain noise immediately, although failures are rare.
GM mandates the use of Dexos 2 specification oil, typically in 5W-30 viscosity. This low-SAPS (Sulphated Ash, Phosphorus, Sulphur) oil is crucial for protecting the turbocharger, emissions components, and mitigating sludge that contributes to carbon buildup. Using non-Dexos oil can void warranties and lead to premature wear.
Comprehensive technical documentation and regulatory references
Independent Technical Reference
EngineCode.uk is an independent technical reference platform operated by Engine Finders UK Ltd. We are not affiliated with GM or any other manufacturer. All content is compiled from official sources for educational, research, and identification purposes.
Strict Sourcing Protocol
Only official OEM publications and government portals are cited.
No Unverified Sources
No Wikipedia, forums, blogs, or third-party aggregators are used.
Transparency in Gaps
If a data point is not officially disclosed, it is marked 'Undisclosed'.
Regulatory Stability
EU regulations are referenced using CELEX identifiers for long-term stability.
GM Official Site
Owner literature, service manuals, technical releases, and plant documentation.
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.
Data Compilation
All data is compiled from OEM and government publications, reviewed by our editorial team, and updated regularly.
Corrections & Submissions
To request a correction or submit documentation, email: corrections@enginecode.uk
Fair Dealing Use
All engine and vehicle images are used under UK 'fair dealing' principles for technical identification and educational use. Rights remain with their respective owners.
Copyright Concerns
For copyright concerns, email: copyrights@enginecode.uk
GDPR Compliance
EngineCode.uk complies with UK GDPR. We do not collect personal data unless explicitly provided.
Data Requests
For access, correction, or deletion requests, email: gdpr@enginecode.uk
Trademark Notice
All trademarks, logos, and engine codes are the property of their respective owners. Use on this site is strictly for reference and identification.
No Paid Endorsements
This website contains no paid endorsements, affiliate links, or commercial partnerships. We do not sell parts or services.
Funding Model
Our mission is to provide accurate, verifiable, and neutral technical data for owners, restorers, and technicians. This site is self-funded.
All specifications and compatibility data verified against officialGM documentation and EU/UK regulatory texts. Where official data is unavailable, entries are marked “Undisclosed”.
All external links open in new tabs. Please verify current availability of resources.