BYD SEALION 6 1.5L Hybrid Engine & Fuel System

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BYD SEALION 6

This page covers the 1.5L petrol engine and related fuel system components of the BYD SEALION 6 plug-in hybrid. Note that trim names, specifications and prices reflect a compiled dataset (October 2026) and that BYD Automotive Australia may update variants, so every figure must be confirmed with an authorised BYD dealer or the official BYD Australia website. Official service/warranty page: https://bydautomotive.com.au/service-and-warranty.

The BYD SEALION 6 is a mid-size SUV that utilises a plug-in hybrid powertrain, known as the BYD Super Hybrid. It incorporates a 1.5L petrol engine, electric motors, and a high-voltage BYD Blade Battery. It is not a pure EV.

Contents

Engine Specifications and Powertrain

The powertrain configuration of the BYD SEALION 6 depends on the selected variant. The Essential Standard Range and Dynamic Extended Range variants are front-wheel drive and use a Xiaoyun 1.5 litre high-efficiency engine producing 72 kW of power and 122 Nm of torque. These are paired with a 145 kW and 300 Nm front permanent magnet synchronous motor, resulting in a maximum combined power of 160 kW.

The Premium Standard Range and Premium Extended Range variants are all-wheel drive. They feature a Xiaoyun 1.5 Ti high-efficiency turbo-charged engine that generates 96 kW and 220 Nm. These variants utilise a front permanent magnet synchronous motor delivering 150 kW and 300 Nm, and a rear permanent magnet synchronous motor delivering 120 kW and 250 Nm. The maximum combined power is 238 kW for the Premium Standard Range and 253 kW for the Premium Extended Range.

For those wanting the BYD SEALION 6 DM-i super hybrid system explained, or looking for specific 1.5L Xiaoyun engine specifications—such as whether it utilises an Atkinson cycle—these details are subject to manufacturer specifications and must be discussed with an authorised BYD dealer.

Fuel System and Efficiency

The vehicle is fitted with a 60 L fuel tank. The official documentation does not state the required fuel grade. Owners seeking details regarding the 60 L fuel tank and whether it takes regular unleaded fuel must refer to the official owner’s manual before refuelling.

The official ADR 81/02 test results provide combined fuel consumption figures, which vary depending on the battery’s state of charge. When the battery is charged, the combined fuel consumption is 1.1 L/100 km for the Essential variant, 0.8 L/100 km for the Dynamic variant, 1.4 L/100 km for the Premium Standard Range, and 1.1 L/100 km for the Premium Extended Range. When the battery is low, these figures rise to 4.72 L/100 km, 4.8 L/100 km, 5.8 L/100 km, and 5.5 L/100 km, respectively. Owners evaluating the BYD SEALION 6 real-world fuel consumption against the ADR test figures should note that results may differ in real-world use.

Combining the fuel tank capacity with the electric propulsion system provides a substantial driving range. Official figures for the electric range (NEDC) are 92 km for the Essential, 140 km for the Dynamic, 81 km for the Premium Standard Range, and 128 km for the Premium Extended Range. Any inquiries regarding the combined petrol and electric range must be confirmed with an authorised BYD dealer.

EV and HEV Mode Operation

The plug-in hybrid architecture allows the vehicle to operate using electric power alone or a combination of the internal combustion engine and the electric motors. The powertrain incorporates regenerative braking. Drivers can adjust the vehicle’s behaviour using the Eco, Normal, and Sport drive modes. Driving terrain modes are also available, with Snow on the Essential and Dynamic variants, and Snow, Mud, and Sand on the Premium variants.

The starting behaviour of the petrol engine is managed automatically by the vehicle’s control systems. The interaction between EV and HEV modes relies on the battery state of charge, selected driving modes, and power demand. For comprehensive operational details, refer to the official owner’s manual.

Oil, Filter, and Spark Plug Servicing

Routine maintenance of the petrol engine involves attention to various fluids and filters. The BYD DM series service schedule records the replacement of the engine oil and filter, the engine air filter element, the fuel filter, and the carbon canister filter.

The initial run-in service for the HEV components must be completed at six months or 3,500 km of HEV trip, whichever comes first. Following this, the BYD SEALION 6 logbook service intervals occur every 12 months or 20,000 km, whichever comes first. Determining the exact spark plugs change interval is subject to manufacturer specifications. Similarly, specific details regarding the engine oil grade, capacity, and filter replacement procedures are not stated in the primary facts and must be confirmed with BYD Automotive Australia or an authorised dealer.

Questions about the vehicle’s exhaust system, such as whether it features a Gasoline Particulate Filter and its regeneration process, should be directed to an authorised BYD dealer.

Safety and High-Voltage Components

Servicing a plug-in hybrid vehicle presents hazards related to its high-voltage architecture. The BYD SEALION 6 integrates its petrol engine with a high-voltage system and electric motors. Any repairs or diagnostics involving the high-voltage system, brakes, steering, or powertrain integration must be done by an authorised BYD dealer or qualified technician. High-voltage orange cables must not be touched or opened by owners.

The BYD SEALION 6 is designed exclusively as a plug-in hybrid. BYD Australia does not offer or authorise any gas conversion, and any aftermarket gas modification is void of manufacturer warranty.

Warranty and Dealership Support

The BYD SEALION 6 is supported by the BYD vehicle warranty, providing 6 years or 150,000 km of coverage. The power battery and drive unit (including the drive motor and drive motor controller) are covered for 8 years or 160,000 km, whichever occurs first, with a guarantee of at least 70% battery capacity retention.

Pricing and servicing costs are not published in the primary fact sheets. Therefore, verifying the BYD SEALION 6 price in Australia, requesting a driveaway price in Melbourne, Sydney, or Brisbane, or seeking a capped price servicing schedule must be done through an authorised dealership.

Frequently Asked Questions

What is the correct fuel grade for the BYD SEALION 6?

The official facts do not state the required fuel grade for the 60 L fuel tank. Owners must refer to the official owner’s manual to confirm the correct petrol specifications.

How often is the petrol engine serviced?

The logbook service intervals are every 12 months or 20,000 km, whichever comes first. There is also an initial run-in service for the HEV components at six months or 3,500 km of HEV trip.

What engine oil does the BYD SEALION 6 use?

The specific engine oil grade and capacity are not published in the official fact sheet. This information must be verified by referring to the official owner’s manual or consulting an authorised dealership.

Can the hybrid system be maintained at home?

No, any maintenance involving the high-voltage system or its integration with the petrol engine must be done by an authorised BYD dealer or qualified technician. High-voltage orange cables must not be touched or opened by owners.

Is the electric drive unit covered under warranty?

Yes, the power battery and drive unit are covered for 8 years or 160,000 km, whichever occurs first, with a guarantee of at least 70% battery capacity retention.

See Also

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Disclaimer: This guide is for informational purposes only. Official specifications, recall details, and warranty terms are determined by BYD Automotive Australia (EVDirect). Always consult an authorized dealer or official owner’s manual.