GM Engine Codes Database

Complete GM Engines Database (1903–2026)

engine-0engine-1engine-2

Covers GM petrol, diesel, and hybrid engines used across UK and European models - from early Pinto engines to modern EcoBoost turbocharged units. Each engine code includes specifications, compatible vehicles, and emissions data, sourced from official GM and EU records.

Engine Variants
Models Covered
of Engineering
Compliance Data

Data sourced from GM WSS-M2C913-C, EU Regulation (EC) No 715/2007, and GM Technical Service Information (TIS) documents.

Browse GM engine records

Find GM engine codes by family, model, or generation

Engine reference image
Engine CodeFuel TypeSeries
L3
PetrolL-Series
L3B
PetrolL-Series
L3X
PetrolL-Series
L3Z
PetrolL-Series
L4
PetrolL-Series
L4C
PetrolL-Series
L5
PetrolL-Series
L52
PetrolL-Series
L59
PetrolL-Series
L5D
DieselL-Series
L5P
DieselL-Series
L6
PetrolL-Series
L7
PetrolL-Series
L76
PetrolL-Series
L77
PetrolL-Series
L8
PetrolL-Series
L82
PetrolL-Series
L83
PetrolL-Series
L84
PetrolL-Series
L86
PetrolL-Series
L87
PetrolL-Series
L88
PetrolL-Series
L89
PetrolL-Series
L8B
PetrolL-Series
L8C
PetrolL-Series
L8T
PetrolL-Series
L8W
PetrolL-Series
L8X
PetrolL-Series
L8Y
PetrolL-Series
L8Z
PetrolL-Series
L92
PetrolL-Series
L94
PetrolL-Series
L96
PetrolL-Series
L98
PetrolL-Series
L99
PetrolL-Series
LA1
PetrolLA-Series
LA4
PetrolLA-Series
LB7
DieselLB-Series
LB8
PetrolLB-Series
LBE
PetrolLBE-Series
LBF
PetrolLBF-Series
LBG
PetrolLBG-Series
LBK
PetrolLBK-Series
LBL
PetrolLBL-Series
LBR
PetrolLBR-Series
LBS
PetrolLBS-Series
LBT
PetrolLBT-Series
LBZ
DieselLBZ-Series
LC8
PetrolLC-Series
LCA
PetrolLCA-Series
LCB
PetrolLCB-Series
LCC
PetrolLCC-Series
LCD
PetrolLCD-Series
LCE
PetrolLCE-Series
LCF
PetrolLCF-Series
LCG
PetrolLCG-Series
LCK
PetrolLCK-Series
LCN
PetrolLCN-Series
LCV
PetrolLCV-Series
LD9
PetrolLD-Series
LDE
PetrolLDE-Series
LDF
PetrolLDF-Series
LDG
PetrolLDG-Series
LDK
PetrolLDK-Series
LDL
PetrolLDL-Series
LDO
PetrolLDO-Series
LDP
PetrolLDP-Series
LDS
PetrolLDS-Series
LFX
PetrolLFX-Series
LFY
PetrolLFY-Series
LGD
PetrolLGD-Series
LGX
PetrolLGX-Series
LGY
PetrolLGY-Series
LH6
PetrolLH-Series
LH8
PetrolLH-Series
LHX
PetrolLHX-Series
LIL
PetrolLIL-Series
LJ9
PetrolLJ-Series
LKA
PetrolLKA-Series
LKD
PetrolLKD-Series
LKG
PetrolLKG-Series
LKJ
PetrolLKJ-Series
LKL
PetrolLKL-Series
LKN
PetrolLKN-Series
LKO
PetrolLKO-Series
LKP
PetrolLKP-Series
LKT
PetrolLKT-Series
LKZ
PetrolLKZ-Series
LLT
PetrolLLT-Series
LLU
PetrolLLU-Series
LLV
PetrolLLV-Series
LLX
PetrolLLX-Series
LLY
DieselLLY-Series
LMG
PetrolLMG-Series
LMP
PetrolLMP-Series
LMQ
PetrolLMQ-Series
LNF
PetrolLNF-Series
LNS
PetrolLNS-Series
LNT
PetrolLNT-Series
LPL
PetrolLPL-Series
LS1
PetrolLS-Series
LS2
PetrolLS-Series
LS3
PetrolLS-Series
LS4
PetrolLS-Series
LS6
PetrolLS-Series
LS7
PetrolLS-Series
LS8
PetrolLS-Series
LS9
PetrolLS-Series
LSD
PetrolLSD-Series
LSY
PetrolLSY-Series
LT1
PetrolLT-Series
LT4
PetrolLT-Series
LT5
PetrolLT-Series
LTA
PetrolLTA-Series
LX9
PetrolLX-Series
LXG
PetrolLXG-Series
LY2
PetrolLY-Series
LY5
PetrolLY-Series
LY6
PetrolLY-Series
LY7
PetrolLY-Series
LZ0
PetrolLZ-Series
LZ1
GasolineLZ-Series
LZ2
GasolineLZ-Series
LZ3
GasolineLZ-Series
LZ4
GasolineLZ-Series
LZ5
PetrolLZ-Series
LZ6
GasolineLZ-Series
LZ7
PetrolLZ-Series
LZ8
PetrolLZ-Series
LZ9
PetrolLZ-Series
LZA
PetrolLZA-Series
LZB
GasolineLZB-Series
LZC
GasolineLZC-Series
LZD
GasolineLZD-Series
LZE
PetrolLZE-Series
LZF
PetrolLZF-Series
LZG
GasolineLZG-Series
LZH
PetrolLZH-Series
LZI
GasolineLZI-Series
LZJ
PetrolLZJ-Series
LZK
PetrolLZK-Series
LZL
GasolineLZL-Series
LZM
GasolineLZM-Series
LZN
GasolineLZN-Series
LZO
PetrolLZO-Series
LZP
PetrolLZP-Series
LZQ
GasolineLZQ-Series
LZR
PetrolLZR-Series
LZS
GasolineLZS-Series
LZT
PetrolLZT-Series
LZU
PetrolLZU-Series
LZV
PetrolLZV-Series
LZW
GasolineLZW-Series
LZX
GasolineLZX-Series
LZY
PetrolLZY-Series
LZZ
PetrolLZZ-Series

GM Engines Used by Third Parties

See where GM power drives other leading brands.

EV & Hybrid Engines

Explore GM's electrified powertrain technologies.

Engine specifications and technical data sourced from GM Technical Documentation and EU Vehicle Type Approval Database. Consult vehicle documentation or professional guidance before undertaking mechanical work. Report errors or omissions through our contact channels.

Looking for a replacement GM engine?

Free to submit · No obligation to buy

Engine Finders UK Ltd, which operates EngineCode.uk, can pass your enquiry to engine suppliers in the UK. The service is for vehicles in the United Kingdom, with UK delivery or fitting. This is a commercially connected service, and sending an enquiry does not confirm diagnosis or compatibility.

Ownership and commercial disclosure·Privacy Policy

How to Find Your GM Engine Code

The engine code is essential for ordering parts, diagnosing issues, and verifying compatibility. It is not the same as the VIN or chassis number. This guide shows exactly where to find it - by model and engine type - using official GM and DVLA sources

Engine Code

Engine Code

A unique identifier stamped on the engine block or cover used for parts and service.

VIN

VIN

The vehicle identification number that holds encoded vehicle and engine information.

Chassis Number

Chassis Number

The chassis or frame number used for registration and legal identification.

GM Focus Mk3 (2011–2018)

GM Focus Mk3 (2011–2018)

Duratorq TDCi

Locate the engine code on the front timing cover, just below the camshaft cover. It is stamped into the metal or on a white label near the timing chain housing.

GM Fiesta Mk7 (2008–2017)

GM Fiesta Mk7 (2008–2017)

EcoBoost 1.0

The engine code is located on a label attached to the turbocharger housing or intake manifold. It reads 'M1JA' or similar for the 1.0L EcoBoost variant.

GM Transit Custom (2012–Now)

GM Transit Custom (2012–Now)

Duratorq TDCi 2.0/2.2

Open the bonnet and look at the front left of the engine. The code is on a white label near the timing cover. Confirm 'TDCi' for diesel; petrol models are rare in this segment.

GM Ka+ (2016–2020)

GM Ka+ (2016–2020)

Sigma 1.2

The engine code is cast into the front of the cylinder head, near the thermostat housing. Look for 'Sigma' followed by displacement code.

Engine code locations per GM Owner's Manual – Vehicle Identification. V5C field definitions from DVLA Guide to Vehicle Registration. VIN structure compliant with EU Regulation (EC) No 715/2007, Article 7.

GM Engine Technology Specifications and Reliability Data

A technical breakdown of GM's core engine systems including Ti-VCT, EcoBoost Turbo, timing architectures and modular design with documented reliability impacts. All data sourced from GM WSS-M2C913-C, GM TIS and EU Regulation (EC) No 715/2007

Overview

GM's Ti-VCT (Twin Independent Variable Cam Timing) system independently adjusts intake and exhaust camshaft timing to optimise power, efficiency, and emissions across the rev range.

How it Works

Hydraulic cam phasers on both intake and exhaust camshafts are controlled by the ECU via oil pressure. This allows continuous adjustment of valve timing for optimal combustion at any engine speed or load.

Ti-VCT mechanism
Evolution
Ti-VCT I

Duratec 2.0 (2004)

Basic dual VVT

Ti-VCT II

EcoBoost 1.6 (2010)

Integrated with turbocharging

Ti-VCT III

EcoBoost 2.0 (2015)

Cam torque actuation for faster response

Ti-VCT IV

EcoBoost 1.5 (2020)

Lightweight phasers, improved oil control

Sources
GM TIS Document SI B13 00 01
GM Group Drive Systems 2023 – Sec 4.2
Affected Engines
Duratec 2.0Duratec 2.3EcoBoost 1.0EcoBoost 1.5EcoBoost 1.6EcoBoost 2.0EcoBoost 2.3EcoBoost 2.7
COMMON ISSUES

  • Cam phaser rattle

    especially on 3.5L EcoBoost at cold start

  • Oil pressure sensitivity

    Low oil level can cause VVT faults

  • Phaser wear

    High mileage units may develop timing errors

GM Engine Production Facts Manufacturing Output and Partnerships

Authoritative data on GM's global engine production, plant operations, and strategic partnerships. All figures sourced from GM Annual Reports, Sustainability Reports, and EU industrial compliance records.

Major Engine Production Plants

GM manufactures engines at three primary facilities in Europe, each specialising in specific families.

Dagenham Plant

🇬🇧Dagenham Plant(United Kingdom)

  • Historic GM engine hub; produces Duratorq diesel engines
  • Engines: Duratorq TDCi 1.6, 2.0, 2.4L
  • Capacity: ~150,000 engines annually (2023)
Cologne Plant

🇩🇪Cologne Plant(Germany)

  • Major European production facility
  • Engines: EcoBoost 1.0, 1.5, Duratorq TDCi
  • Capacity: ~200,000 engines annually (2023)
Valencia Plant

🇪🇸Valencia Plant(Spain)

  • GM European manufacturing hub
  • Engines: EcoBoost 1.0, Sigma, PHEV components
  • Capacity: ~180,000 engines/year (2024 expansion)

Annual Engine Production Volume

GM produces approximately 430,000–480,000 engines per year in Europe. Note the steady decline in Diesel production due to Euro 6d and WLTP regulations, while Hybrid integration rises.

Diesel Decline (-15% since 2020)
Hybrid Growth (+7% since 2020)
Regulatory Impact: (EC) No 715/2007

Note: Diesel production has declined steadily due to Euro 6d and WLTP regulations (Regulation (EC) No 715/2007). Hybrid and plug-in hybrid integration rising.

0k100k200k300k400k500k480k2020465k2021450k2022440k2023430k2024 (e)Total Engines Produced
Petrol
Diesel
Hybrid

GM & Mazda Partnership

Strategic collaboration since 1990s. Duratorq-based diesel engines power the Mazda BT-50 pickup across Europe, utilising GM's Dagenham-built blocks.

Shared Tech

High-pressure common rail & turbo design

Production

Duratorq blocks built in Dagenham, then modified by Mazda

GM-Mazda Joint Development: Duratorq & BT-50
  • Strategic partnership from 1990s for diesel and commercial vehicle technologies.
  • Duratorq-based diesel used in Mazda BT-50 pickup across European markets.
  • Shared engineering: high-pressure common rail systems and turbocharger design.

GM Strategic Partnerships – Mazda Collaboration

Powertrain Mix (2020–2024)

Shift in production reflects EU emissions policy and changing consumer demand.

Petrol66%
Diesel20%
Hybrid14%
Petrol
58–66%
Driven by EcoBoost family (1.0L, 1.5L, 2.0L)
Diesel
20–35%
Declining due to TCO, urban bans, and AdBlue complexity
Hybrid (PHEV)
7–14%
PHEV models (Kuga PHEV, Transit Custom PHEV)

This aligns with Commission Regulation (EU) 2017/1151 (WLTP/RDE) and EU 2030 ICE phase-out roadmap.

Engine production years verified via GM Production Reports and EU type-approval records

Engine Code FAQ Common Questions Answered

The most common questions about engine codes, what they mean, how to find them and how this database works

Confirm the full engine designation using vehicle-specific manufacturer records and the engine marking. An engine serial number, a registration record and a marketed power badge are not automatically the same identifier. Match the VIN/build data and the installed engine before selecting parts or a replacement.

No. A factory-application reference and a replacement-interchange decision are different. Match the full engine designation, vehicle build data, emissions equipment, controls and relevant supplier/OEM information.

No. Records have different review states. Read the correction notice, source scope and application limits on the individual record. Missing technical fields must not be inferred from similar engine codes.

References, Disclaimers and Sources

EngineCode.uk provides reference information about GM engines. It is operated by Engine Finders UK Ltd and also offers an optional replacement-engine enquiry service. Technical information can contain errors or omissions. Check the sources and verification notes for the relevant record, and confirm the details for your vehicle before buying parts or arranging work.

EngineCode.uk is a reference website operated by Engine Finders UK Ltd. It is not an official manufacturer website and is not endorsed by the manufacturers whose engines it describes. Manufacturer names and trademarks are used to identify the subjects covered. Our ownership and any commercial routes are explained in our Ownership and Commercial Disclosure.

  • GM – Product Technical Reports (WSS-M2C913-C), Annual Reports, Sustainability Reports
  • GM TIS / ISTA – Service Information, Repair Manuals, SI Bulletins (e.g., TSB 18-2345)
  • EU Regulation (EC) No 715/2007 – Type-approval of light-duty vehicles
  • Commission Regulation (EU) 2017/1151 – WLTP and RDE testing procedures
  • UK DVLA Vehicle Approval and V5C Guidelines
DVLA: Engine Changes and MoT Compliance

Images and other material may be protected by copyright. Attribution does not by itself grant permission to reuse material. If you believe material on this site infringes your rights, contact copyrights@enginecode.uk with the page URL and details of your claim. We will review the material and take appropriate action.

Our Privacy Policy explains how Engine Finders UK Ltd uses information from visits, vehicle lookups, enquiries and messages. Our Cookie Policy explains cookies and similar technologies and how to change your choices.

Privacy PolicyCookie Policy

EngineCode.uk is owned and operated by Engine Finders UK Ltd. Alongside our reference content, we offer an optional replacement-engine enquiry service through Engine Finders and may identify relevant services provided by businesses connected with us. These commercial connections are disclosed. Using an enquiry service is not required to read our reference content.

Reference information with disclosed commercial services
Report a problem with this page