The Cadillac LFX is a 3,582 cc, V6, naturally aspirated petrol engine produced between 2010 and 2016. It features a DOHC 24 — valve configuration with Variable Valve Timing (VVT) and direct fuel injection, delivering 234 kW (318 PS) in standard applications. Designed as a refined, fuel — efficient powerplant, it combines aluminum construction with advanced combustion control for responsive performance.
Fitted to models such as the Cadillac CTS, XTS, and high — trim SRX,…
Production years 2010–2012 meet U.S. Tier 2 Bin 5 standards; 2013–2016 models comply with Euro 5 depending on market (EPA Certification #GML-EMS-9056).
The Cadillac LFX is a 3,582 cc V6 naturally aspirated engine engineered for premium applications (2010–2016). It combines direct injection with Variable Valve Timing to deliver responsive power and improved fuel efficiency. Designed to meet Euro 5 emissions, it balances refinement with performance in daily driving.
| Parameter | Value | Source |
|---|---|---|
Displacement | 3,582 cc | |
Fuel type | Petrol | |
Configuration | V6, DOHC, 24-valve | |
Aspiration | Naturally aspirated | |
Bore × stroke | 94.0 mm × 86.0 mm | |
Power output | 234 kW (318 PS) @ 6,800 rpm | |
Torque | 367 Nm @ 5,200 rpm | |
Fuel system | Direct injection (Bosch HDEV5) | |
Emissions standard | Euro 5 (post-2013) | |
Compression ratio | 11.3:1 | |
Cooling system | Water-cooled | |
Turbocharger | Not applicable | |
Timing system | Chain-driven (double-row, front-mounted) | |
Oil type | GM Dexos1 Gen 1 (SAE 5W-30) | |
Dry weight | 180 kg |
The Cadillac LFX was used across Cadillac's CTS, XTS, and SRX platforms with longitudinal mounting. This engine received platform-specific adaptations-revised engine mounts in the CTS and modified transmission tuning in the XTS-and from 2013 the updated SRX models adopted Euro 5 compliance with revised ECU calibration, creating interchange limits. All adaptations are documented in OEM technical bulletins.
The LFX's primary reliability risk is intake manifold gasket failure on high-mileage engines, with elevated incidence in vehicles used for short trips. Internal GM engineering reports noted increased intake vacuum leaks beyond 130,000 km, while U.S. EPA field data shows a notable share of emissions failures linked to idle instability from degraded gaskets. Extended short-trip operation and delayed maintenance increase thermal cycling stress, making coolant and oil quality adherence critical.
Analysis derived from GM technical bulletins (2010-2016) and U.S. EPA emissions failure statistics (2010-2023). 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 LFX is a robust, modern engine when maintained properly. Regular oil changes (every 12,000 km) with GM Dexos1 5W-30 oil are essential. Engines with documented service history and no overheating incidents can exceed 180,000 km reliably. Its aluminum construction and DOHC design contribute to long-term durability in both daily and performance driving applications.
The most common issues include intake manifold gasket failure, intake valve coking, PCV system clogging, and fuel pump degradation. These are documented in GM service literature and prevalent in high-mileage or poorly maintained examples. Preventative maintenance significantly reduces failure risk.
The LFX was used in the Cadillac CTS (2010-2016), XTS (2013-2016), and SRX (2010-2016). It was not used in base trims or front-wheel-drive-only configurations. The engine was exclusive to North American and select international markets, primarily for mid-size and full-size luxury vehicles.
Yes. The LFX responds well to ECU remapping, typically gaining +20-40 kW safely with supporting modifications. Performance gains come from cold-air intakes, exhaust systems, and camshaft upgrades. However, stock internals are strong but have limits; aggressive tuning without forged components risks reliability.
Fuel consumption is moderate for a naturally aspirated V6. In the CTS, combined consumption is approximately 10.5 L/100km (~27 mpg UK). City driving may exceed 13 L/100km (~22 mpg), while highway cruising can achieve ~8.0 L/100km (~35 mpg). Driving style significantly impacts real-world economy.
Yes. The LFX is an interference engine. If the timing chain fails or skips, the pistons can contact the valves, resulting in severe internal damage. The front-mounted double-row chain is robust, but inspection after 150,000 km is advised in high-mileage applications.
GM specifies SAE 5W-30 oil meeting Dexos1 Gen 1 (or newer equivalent) standards. This viscosity is essential for lifter quietness and camshaft protection. Oil must be changed every 12,000 km or annually, and OEM-approved filters should be used to ensure proper flow and filtration.
Comprehensive technical documentation and regulatory references
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CADILLAC 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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