GWM Engine Platforms Compared: EG, EB, EC, EN, ED & EZ – Which One Fits Your Vehicle?

Choosing the right engine for your vehicle programme can be overwhelming. With multiple platforms, varying displacements, and different technological approaches, how do you know which one is right for your application?

Great Wall Motors (GWM), through its powertrain division, has developed six distinct engine platforms covering displacements from 1.5L to 3.0L, spanning petrol, diesel, hybrid, and even compressed natural gas (CNG) configurations. Each platform serves a specific market segment and vehicle type – from light commercial vehicles to flagship luxury SUVs.

This guide breaks down each platform – EG, EB, EC, EN, ED, and EZ – so you can make an informed decision for your next vehicle programme.

At a Glance: The Six Platforms

EG Platform – The Workhorse with 6 Million Units of Proven Reliability

The EG platform is GWM's most established petrol engine family, carrying "6 million quality genes" – a testament to its proven reliability. It is designed for light commercial vehicles, light trucks, SUVs, and pickups.

The EG platform is the first engine to feature cooled LP-EGR (Low-Pressure Exhaust Gas Recirculation) , a technology that reduces NOx emissions and improves fuel economy. It has achieved industry-leading value for money and is renowned for its reliability, durability, and optimised NVH performance.

Key Models

Specifications

• Low-end torque (HY4G15F): 118 N·m @ 1,000 rpm
• Low-end torque (HY4G15H): 175 N·m @ 1,200 rpm
• Emission standard: State VIb
• Production capacity: 280,000 units/year (petrol) + 120,000 units/year (hybrid)
• Matching transmissions: 7DCT, 6MT, DHT
• SOP: July 2019 (HY4G15F), August 2020 (HY4G15H), March 2021 (HY4G15-CNG)
• Market applications: Foton light trucks, Changan Kuayue light trucks

Who should choose EG?

• Manufacturers of light trucks, commercial vehicles, and cost-sensitive SUVs
• Buyers seeking a proven, reliable engine with over 6 million units in service
• Programmes requiring fuel flexibility – the EG platform offers petrol, hybrid, and CNG variants
• Applications where low-end torque and durability are more important than outright performance

EB Platform – The Efficiency Pioneer with 43% Thermal Efficiency

The EB platform represents GWM‘s first major leap into advanced petrol engine technology. It was the first Chinese-brand engine to feature CVVL (Continuously Variable Valve Lift) technology – a system previously found only in premium European engines like BMW‘s Valvetronic.

But the EB platform’s most remarkable achievement is its 43% ultra-high thermal efficiency– a figure that places it among the world‘s most thermally efficient production gasoline engines. This is achieved through the passive pre-chamber combustion technology – a technology GWM is the first in China to apply to a production gasoline engine. The passive pre-chamber acts as a “flame accelerator” – a small chamber around the spark plug amplifies the ignition energy before delivering it to the main combustion chamber, creating multiple ignition points for ultra-fast combustion that tolerates higher EGR rates and leaner mixtures.

The EB platform also features VGT (Variable Geometry Turbocharger) for balanced low-speed and high-speed performance, and supports dual-platform development – both conventional and hybrid powertrains.

Key Models

Specifications

• Low-end torque (HY4B15A): 140 N·m @ 1,000 rpm
• Low-end torque (HY4B15C): 135 N·m @ 1,000 rpm
• Minimum BSFC: As low as 195.2 g/kW·h (HY4B15F)
• Emission standard: State VIb (HY4B15A); State VIb + RDE (all others)
• Production capacity: 700,000 units/year
• Matching transmissions: 7DCT, 9DCT, 6MT, DHT
• SOP: December 2018 (HY4B15A), August 2021 (HY4B15C), April 2021 (HY4B15D), June 2022 (HY4B15E/F)
• Market applications: Haval SUV lineup

Who should choose EB?

• Manufacturers developing SUVs and sedans where thermal efficiency and performance are equally important
• Buyers seeking world-class efficiency – 43% thermal efficiency is a benchmark achievement
• Programmes requiring advanced valve control technology at a competitive price point
• Applications where fuel economy is a priority – the EB platform offers exceptional efficiency across all operating conditions
• Programmes requiring hybrid-ready architecture – EB supports both conventional and hybrid configurations

EC Platform – The Direct Injection Pioneer

The EC platform holds a special place in Chinese automotive history – it is China’s first independently developed in-cylinder direct injection engine.

The platform‘s 2.0T engines (such as HY4C20B and HY4C20C) deliver 165 kW of power and 385 N·m of peak torque. The HY4C20B features a 350-bar high-pressure direct injection system with six-nozzle injectors capable of up to three injection events per cycle. Low-end torque is an impressive 220 N·m at just 1,000 rpm, giving exceptional responsiveness from idle.

The HY4C20C variant adds a 48V mild-hybrid system, reducing fuel consumption to as low as 226 g/kWh BSFC. Both variants meet China State VIb emission standards, with the HY4C20C also complying with RDE requirements.

Who should choose EC?

• Manufacturers developing SUVs, MPVs, pickups, and light commercial vehicles
• Buyers seeking a proven, high-torque 2.0T engine with over 300,000 units in service
• Programmes requiring 48V mild-hybrid capability for enhanced fuel efficiency
• Applications where low-end torque is critical for off-road or heavy-load conditions

Real-world application

The EC platform powers GWM‘s full brand lineup, as well as vehicles from BAIC (BJ40) , Liuqi (CM7 MPV) , Weichai Auto (U70D/U70P) , and ZTE pickups. It was named a "China Heart" Top Ten Engine in 2019.

EN Platform – The Efficiency Champion (Miller Cycle)

The EN platform is GWM‘s first mass-production Miller cycle engine. It represents a generational leap from the EC platform – the direct successor to the 4C20 series.

The EN platform’s 2.0T engines (such as 4N20 and 4N20A) achieve a world-class 38.3% thermal efficiency. The high-power 4N20A delivers 180 kW and 385 N·m of torque, while the low-power 4N20 offers 150 kW and 320 N·m.

Key technologies include:

• Miller cycle with 12:1 compression ratio
• 350-bar central direct injection (cGDI) – vertical injector placement eliminates wall-wetting
• Two-stage VVL on the high-power variant
• Electronic water pump and electronic thermostat for precise thermal management
• Self-developed dual-volute turbocharger

The EN platform achieves 5–8% fuel consumption reduction across all operating conditions and up to 15% reduction under low-load conditions.

Who should choose EN?

• Manufacturers prioritising fuel economy and thermal efficiency
• Buyers seeking a modern 2.0T engine with hybrid-ready architecture – supporting P0 and P2 hybrid configurations
• Programmes requiring flexibility – the EN platform is offered in low-power, high-power, and hybrid-ready variants
• Applications across SUVs, sedans, MPVs, and pickups

Real-world application

The EN platform powers the third-generation Haval H6, Haval Dargo, and GWM Pickup. It was named a “China Heart” Top Ten Engine in 2020.

ED Platform – The Diesel Market Leader

The ED platform is GWM‘s dedicated diesel engine family – and it has become the dominant force in China’s diesel pickup market.

The platform offers two displacements:

• HY4D20M (2.0T) : 120 kW, 400 N·m

• HY4D24 (2.4T) : 135 kW, 480 N·m

Both engines feature 2000-bar high-pressure common rail systems, VGT variable geometry turbochargers, and achieve a minimum BSFC of just 200 g/kWh.

What truly sets the ED platform apart is its exceptional NVH performance. The GW4D20M achieves idle noise as low as 46.6 dB – quieter than normal human conversation and a remarkable achievement for a diesel engine.

The ED platform has achieved a 77% market share of China‘s diesel pickup engine segment, with over 103,000 vehicles equipped in the first ten months of 2023 alone.

Who should choose ED?

• Manufacturers developing pickups, SUVs, and light commercial vehicles where torque and durability are paramount
• Buyers seeking a proven, market-leading diesel engine with exceptional reliability
• Programmes where low-end torque is critical for off-road, towing, or heavy-load applications
• Applications requiring exceptional NVH performance – the ED platform is the quietest diesel in its class

Real-world application

The ED platform powers GWM‘s entire pickup lineup – including the Cannon (Poer), Fengjun 5, Fengjun 7, and King Kong Cannon – as well as vehicles from ZTE and Changan. It is exported to markets including Australia, Russia, South Africa, and Europe.

EZ Platform – The Flagship V6

The EZ platform is the crown jewel of GWM's engine portfolio – China's first independently developed twin-turbo V6 gasoline engine.

The HY6Z30 is a 3.0-litre V6 with a 60-degree V-angle, delivering 260 kW of power and 500 N·m of peak torque. Low-end torque is an exceptional 340 N·m at just 1,000 rpm – a critical feature for off-road and heavy-duty applications.

Every 6Z30 engine is equipped with a 48V BSG motor, and when paired with the P2 hybrid 9HAT transmission, the system delivers up to 750–800 N·m of peak torque. The engine achieves 38.5% thermal efficiency with a BSFC as low as 219.6 g/kWh – exceptional for a V6.

Key technologies include:

• Dual VGT turbochargers
• Dual injection system (350-bar GDI + PFI)
• Deep Miller cycle
• Integrated water-cooled charge air cooler
• Full-map variable displacement oil pump

The EZ platform has undergone 12,000+ hours of bench durability testing and 1.35 million kilometres of vehicle durability testing.

Who should choose EZ?

• Manufacturers developing flagship SUVs, premium pickups, motorhomes, and large off-road vehicles
• Buyers seeking a premium V6 experience with V8-like torque and four-cylinder efficiency
• Programmes requiring hybrid-ready architecture – supporting 48V BSG and P2 hybrid configurations
• Applications where refinement, NVH, and prestige are critical – idle noise is just 58 dB

Real-world application

The EZ platform powers flagship models including the Tank 500, Tank 700, and Tank 800, as well as the GWM Poer (Shanhai Cannon) V6【PPT†L18】. It was named a “China Heart” Top Ten Engine in 2022【PPT†L18】 and is exported to markets including Australia, South Africa, and the Middle East【PPT†L18】.

Quick Decision Guide: Which Platform Is Right for You?

Summary Comparison: Thermal Efficiency

Note: The EB platform’s 43% thermal efficiency stands as the highest among all GWM engine platforms – a benchmark achievement that demonstrates the potential of passive pre-chamber combustion technology.

Contact us today to discuss which GWM engine platform is right for your next vehicle programme.