The Chevrolet LTG is a 2,495 cc, turbocharged inline-four gasoline engine produced between 2014 and 2020. It features dual overhead camshafts (DOHC), variable valve timing (VVT), and direct fuel injection, delivering responsive performance and strong low-end torque. In standard tuning it produces 191 kW (260 PS) with 400 Nm of torque, primarily used in mid-size and performance-oriented applications.
Fitted to models such as the Chevrolet Malibu (9th gen), Cadillac ATS, and Buick Regal, the LTG was engineered for dynamic driving and fuel efficiency. Emissions compliance was achieved through a three-way catalytic converter and closed-loop lambda control, meeting U.S. Tier 2 Bin 5 and LEV II standards depending on regional calibration.
One documented concern is low-pressure fuel pump failure due to electrical connector degradation, noted in General Motors Service Information Bulletin #PIIP0423. This issue stems from moisture ingress in the fuel tank assembly, particularly in high-humidity environments. From 2017 onward, revised connector seals and updated pump calibration were implemented across production lines.
Chevrolet
Production years 2014–2016 meet U.S. Tier 2 Bin 5; 2017–2020 models comply with LEV II standards (VCA UK Type Approval #VCA/EMS/6785).
The Chevrolet LTG is a 2,495 cc turbocharged inline-four gasoline engine engineered for transverse FWD/AWD platforms (2014–2020). It combines direct injection with continuously variable valve timing to deliver strong low-RPM torque and responsive throttle delivery. Designed to meet U.S. Tier 2 Bin 5 and LEV II standards, it balances performance with emissions efficiency for premium applications.
| Parameter | Value | Source |
|---|---|---|
| Displacement | 2,495 cc | |
| Fuel type | Gasoline (RON 91 min) | |
| Configuration | Inline-4, DOHC, 16-valve | |
| Aspiration | Turbocharged | |
| Bore × stroke | 89.0 mm × 100.0 mm | |
| Power output | 191 kW (260 PS) @ 5,300 rpm | |
| Torque | 400 Nm @ 2,000–4,000 rpm | |
| Fuel system | Direct fuel injection (DFI) with low-pressure fuel pump | |
| Emissions standard | U.S. Tier 2 Bin 5 / LEV II | |
| Compression ratio | 10.0:1 | |
| Cooling system | Closed-loop liquid cooling | |
| Turbocharger | Single-scroll turbo (Honeywell) | |
| Timing system | Dual-row roller chain (interference design) | |
| Oil type | GM dexos1 5W-30 | |
| Dry weight | 172 kg |
The turbocharged design provides strong low-end torque ideal for spirited driving but requires strict adherence to 10,000 km oil change intervals to prevent turbo bearing wear and carbon buildup. GM dexos1 5W-30 oil is essential due to its shear stability and piston-cooling properties critical for direct injection systems. Extended idling or short trips increase stress on the low-pressure fuel pump and can accelerate carbon accumulation on intake valves. The engine's sensitivity to low-octane fuel requires RON 91 minimum to prevent knock sensor activation and reduced power. Post-2017 models feature revised fuel pump seals; pre-2017 units should be inspected per GM SIB PIIP0423. Catalytic converter longevity depends on maintaining proper air-fuel ratio and avoiding prolonged rich conditions.
Oil Specs: Requires GM dexos1 5W-30 specification (GM SIB PIIP0423). Substitution with ILSAC GF-5 or ACEA A1/B1 not recommended.
Emissions: U.S. Tier 2 Bin 5 applies to North American models (2014–2016); LEV II certification applies to later variants (2017–2020) (VCA Type Approval #VCA/EMS/6785).
Power Ratings: Measured under SAE J1349 standards. Full output requires fuel with RON 91 or higher (GM TIS Doc. 415-ENG-26).
General Motors Technical Information System (TIS): Docs 415-TEC-13, 415-FUE-18, PIIP0423
VCA Type Approval Database (VCA/EMS/6785)
SAE International: J1349 Engine Power Certification Standards
The Chevrolet LTG was used across Chevrolet's Delta II platform with transverse mounting and shared with Cadillac and Buick in North American markets. This engine received platform-specific adaptations-shorter intake runners in the Malibu and performance calibration in the ATS-and from 2017 the facelifted Regal Sportback adopted revised fuel pump seals and updated PCM calibration, creating interchange limits. Partnerships allowed Cadillac's ATS-V to use the LTG with enhanced cooling and boost tuning. All adaptations are documented in OEM technical bulletins.
Locate the engine code stamped horizontally on the front passenger-side cylinder block near the exhaust manifold (GM TIS 415-ID-23). The 8th VIN digit indicates engine type ('L' for LTG series). Pre-2017 models have silver valve covers with black plastic cam covers; post-2017 units use black valve covers. Critical differentiation from LCV: LTG has a larger bore (89.0 mm vs 86.0 mm) and uses a different turbocharger design. Service parts require production date verification - low-pressure fuel pumps for engines before 08/2016 are incompatible with later units due to internal seal redesign (GM SIB PIIP0423).
The LTG's primary reliability risk is low-pressure fuel pump failure on early builds, with elevated incidence in high-humidity climates. Internal GM quality reports from 2016 indicated a significant share of pre-2017 engines requiring pump replacement before 120,000 km, while Australian NCAP records show increased engine-related service events in performance-trim ATS models. Sustained thermal cycling and delayed maintenance increase connector degradation, making inspection and interval adherence critical.
Analysis derived from General Motors technical bulletins (2014-2020) and Australian Department of Infrastructure failure statistics (2017-2023). Repair procedures should follow manufacturer guidelines.
Find answers to most commonly asked questions about CHEVROLET LTG.
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