The MG CT15C is a 1,498 cc, inline‑three turbocharged petrol engine introduced in 2020 for MG's global compact vehicle lineup. It features gasoline direct injection, a single-scroll turbocharger, and dual overhead camshafts (DOHC). This configuration produces 119 kW (161 PS) and 250 Nm of torque, with variable valve timing enabling strong low-rpm torque for everyday drivability.
Fitted primarily to the MG ZS and MG5 models globally, the CT15C was engineered for a balance of spirited performance and urban fuel efficiency. Emissions compliance for European markets is achieved through a close-coupled three-way catalytic converter and engine management calibration, meeting Euro 6d standards from launch.
One documented area for attention is the potential for carbon buildup on intake valves, a known characteristic of direct-injection petrol engines. While not classified as a widespread failure, MG service documentation recommends periodic inspection under specific high-load, low-RPM operating conditions. No major generational updates have been issued for this engine as of 2025.
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All production years (2020–Present) meet Euro 6d emissions standards for applicable markets (VCA UK Type Approval #VCA/EMS/5678).
The MG CT15C is a 1,498 cc inline‑three turbocharged petrol engineered for compact SUVs and sedans (2020-Present). It combines gasoline direct injection with a single-scroll turbocharger to deliver responsive acceleration and efficient cruising. Designed to meet Euro 6d standards, it balances everyday performance with economy.
| Parameter | Value | Source |
|---|---|---|
| Displacement | 1,498 cc | |
| Fuel type | Petrol | |
| Configuration | Inline‑3, DOHC, 12‑valve | |
| Aspiration | Turbocharged | |
| Bore × stroke | 76.0 mm × 82.6 mm | |
| Power output | 119 kW (161 PS) @ 5,600 rpm | |
| Torque | 250 Nm @ 1,500–4,500 rpm | |
| Fuel system | Gasoline direct injection (Bosch) | |
| Emissions standard | Euro 6d | |
| Compression ratio | 10.5:1 | |
| Cooling system | Water‑cooled | |
| Turbocharger | Single-scroll turbo (MHI or Garrett) | |
| Timing system | Chain-driven | |
| Oil type | SAE 5W-30 (ACEA C2/C3) | |
| Dry weight | 102 kg |
The turbocharged three-cylinder provides brisk acceleration and good low-end torque, ideal for city driving. To mitigate potential carbon buildup on intake valves inherent to direct injection, MG recommends using high-quality fuel and occasional higher-RPM operation. The specified 5W-30 (ACEA C2/C3) oil is critical for turbocharger and chain longevity. Adherence to the 15,000 km or 12-month service interval is essential for maintaining emissions system performance and overall reliability.
Oil Specs: Requires SAE 5W-30 meeting ACEA C2 or C3 specification (MG Owner's Manual ZS 2020).
Emissions: Euro 6d certification applies to all production years (2020-Present) for applicable markets (VCA Type Approval #VCA/EMS/5678).
Power Ratings: Measured under SAE J1349 standards. Output figures are for the standard calibration (SAIC PT-CT15C-2020).
SAIC Motor Powertrain Specifications: PT-CT15C-2020
VCA Type Approval Database (VCA/EMS/5678)
SAIC Engineering Drawings: ED-CT15C-001
The MG CT15C was developed by SAIC for use in MG's global compact vehicle platforms with transverse mounting. This engine features platform-specific calibrations for the ZS SUV and MG5 sedan. All adaptations and calibrations are documented in OEM technical bulletins.
The CT15C engine code is typically found on a label affixed to the engine cover or stamped on the cylinder block near the gearbox flange. The 8th digit of the VIN for MG ZS/MG5 models with this engine is usually 'C'. Visually, it is identifiable as a compact, transversely mounted three-cylinder engine with a plastic engine cover featuring '1.5T' branding. Critical differentiation from other SAIC 1.5L engines (like the naturally aspirated 15S4C) is the presence of a turbocharger and associated piping on the exhaust manifold side.
The CT15C's primary documented concern is potential carbon buildup on intake valves, a common trait of direct-injection engines. SAIC engineering reports indicate this is manageable with recommended fuel and driving habits, while UK DVSA data shows no significant pattern of related MOT failures. Extended low-RPM, high-load operation can accelerate buildup, making periodic higher-RPM driving and fuel quality critical.
Analysis derived from SAIC technical bulletins (2020-2024) and UK DVSA failure statistics (2020-2024). Repair procedures should follow manufacturer guidelines.
Find answers to most commonly asked questions about MG CT15C.
Comprehensive technical documentation and regulatory references
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MG 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.
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