GM Engine Codes Database

A GM engine code (e.g., Duratorq TDCi, EcoBoost 1.0) identifies the engine family, fuel type, displacement, and generation. Prefix indicates era (Pinto = 1970s, CVH = 1980s, Duratorq = 1990s+, EcoBoost = 2009+). Suffix denotes variant (TDCi = turbo diesel common rail). Source: GM WSS-M2C913-C

Yes, but production is declining. The Duratorq TDCi 2.0 diesel engine is still used in the Transit Custom, Ranger, and Tourneo (2024 UK models). However, GM plans to phase out diesel by 2030 in line with EU emissions targets. Source: Regulation (EC) No 715/2007

The Duratorq TDCi 2.0 (pre-2015) is widely regarded as GM's most reliable modern diesel. Older naturally aspirated engines like the Pinto and CVH are also durable if maintained. Avoid early 1.0L EcoBoost engines due to wet belt timing issues.

Most modern GM engines use timing chains, including Duratorq diesels and larger EcoBoost petrol engines. The 1.0L EcoBoost uses a 'wet belt' (timing belt running in oil) requiring replacement every 10 years or 150,000 miles.

Technically possible, but complex. Requires ECU remapping, wiring harness changes, and mount modifications. Not recommended without expert tuning. Ensure compliance with UK emissions rules. Source: DVLA Vehicle Approval

On the Duratorq or EcoBoost engine, the code is stamped on the front timing cover or on a label near the camshaft housing. Also check the V5C logbook under 'Engine Number'.

On the UK V5C registration document, look for the 'Engine Number' field (not VIN). This matches the engine code (e.g., Duratorq TDCi). If the engine was replaced, this may not reflect the current unit.

The 1.0L EcoBoost (2012–Present) has experienced wet belt degradation issues leading to potential failure around 100,000–150,000 miles. GM issued Technical Service Bulletin TSB 18-2345 addressing this. Regular oil changes with WSS-M2C913-C specification are critical.

Duratorq: GM's diesel family (1.6, 2.0, 2.4L TDCi) – used in Transit, Focus, Ranger. EcoBoost: GM's turbo petrol family (1.0, 1.5, 2.0, 2.3L) – used in Fiesta, Focus, Mustang. Both use direct injection but different fuel systems.

Yes. The engine code (e.g., Duratorq TDCi 2.0) is required for ordering correct parts (ECU, turbo, injectors). Using VIN alone can lead to errors. Always verify with the physical engine code.

Yes. High-performance engines (2.3L EcoBoost in Mustang) or engines with known issues (1.0L EcoBoost) can increase premiums. Insurers use engine type to assess risk. Always declare correct engine code.

The Duratorq TDCi (1998–Present) is designed for 200,000+ miles with proper maintenance. Known for robust construction and efficient common rail injection. DPF and EGR are common service items on high-mileage urban-use vehicles.

Yes. All EcoBoost engines (1.0L, 1.5L, 2.0L, 2.3L) are interference engines. If the timing belt/chain fails, internal damage is likely. Immediate towing required. The 1.0L wet belt requires strict adherence to replacement intervals.

Early EcoBoost 1.0L and 1.5L: High-pressure fuel pump wear reported. Duratorq diesel: High-pressure pump generally reliable but injector coking common. GM extended warranty on select EcoBoost via Warranty Bulletin WB-18-07-01.

Yes, but must be declared to DVLA. Changing engine code (e.g., petrol to diesel) may affect MoT, insurance, and emissions compliance. Source: DVLA guidelines

Yes. The Kuga PHEV and Transit Custom PHEV use the EcoBoost 1.5L petrol engine paired with an electric motor. The engine is de-tuned for hybrid efficiency and emissions compliance.

The Sigma 1.0/1.25L petrol engine is generally reliable but prone to oil consumption and timing chain tensioner wear in early models. Common in Ka, Fiesta, B-MAX. Service interval: 12,500 miles in UK conditions.

Positions 4–7 of the VIN indicate engine type for GM vehicles. Example: WF0AXX... → 'AXX' = Duratorq TDCi 2.0. Source: GM Owner's Manual – VIN Structure

Some are. Pinto and CVH engines are simpler and more durable than early EcoBoost variants. However, modern EcoBoost and Duratorq engines offer better efficiency and emissions compliance under Euro 6.

Use GM Technical Information System (TIS) or GM Product Technical Reports. Public data also in EU type-approval documents. Source: CELEX:32007R0715