BYD Sealion 8 (Atto 8) Complete Official Maintenance Schedule & Parts Guide
This flagship large 7-seat electric SUV carries two global market names for regional sales: it is sold as the BYD Sealion 8 across Australia, New Zealand and Southeast Asia, while the identical vehicle is branded the BYD Atto 8 for Mexico and Middle Eastern markets. The chassis, battery, cabin layout and official maintenance standards are fully consistent regardless of regional naming.
Many owners skip regular scheduled maintenance based on mileage, leading to clogged filters, degraded brake performance and weakened battery heat dissipation after years of family travel. This guide shares the factory-recommended service cycle, simple DIY replacement steps for consumables, and reliable channels to source matching genuine OEM spare parts.
Official Standard Maintenance Cycle
All BYD Sealion 8 / Atto 8 models follow a unified service rule: service every 12 months or 20,000 km, whichever comes first. New vehicles require a complimentary first full inspection at 5,000 km or 3 months to calibrate battery data and tighten all chassis fasteners.
Mileage-Based Full Parts Replacement Checklist
5,000 KM / 3 Months: Initial New Car Inspection
Full Blade Battery health scan and cell capacity calibration
Chassis bolt & suspension tightness inspection
Brake pad thickness, brake disc and tire pressure check
Clean existing cabin air filter to remove factory dust residue
20,000 KM / 12 Months: First Standard Service
Replace the cabin air filter (key consumable for 7-row cabin air quality)
Measure brake pad wear and inspect brake disc surface scratches
Check underbody protection plate and suspension rubber bushing status
Complete inspection of battery cooling circulation system
40,000 KM / 24 Months: Medium Cycle Service
Swap out a new cabin air filter
Full replacement of brake fluid (2-year factory mandatory cycle)
Check coolant liquid level and cooling system pipeline tightness
Tire wear test + four-wheel alignment and tire rotation
60,000 KM / 36 Months: In-Depth System Inspection
Renew cabin filter and inspect air intake pipeline blockage
Deep check of battery cooling pipes for aging or leakage
Detect shock absorber damping performance and rubber bushing degradation
Test V2L external discharge port and main charging port for loose contacts
100,000 KM / 5 Years: Major Full Vehicle Overhaul
Comprehensive chassis component inspection and tightening
Full brake system replacement if pads/discs reach wear limit
Complete battery aging test and capacity recalibration
Simple DIY Replacement Methods For Common Consumables
1. Cabin Air Filter Swap
The cabin filter of BYD Sealion 8 / Atto 8 is installed behind the passenger glove box. It only takes 5 minutes to replace without professional tools. A blocked filter reduces air-con airflow, leaves unpleasant odors and fails to filter fine dust for the three-row passenger cabin. Replace strictly every 20,000 km to maintain interior air quality for family trips.
2. Brake Fluid Replacement Tips
Brake fluid absorbs moisture naturally over time, which reduces braking stability during mountain drives or high-speed travel. Professional vacuum fluid replacement is recommended to avoid air bubbles trapped inside the brake pipeline, which may cause braking delay.
3. Tire Maintenance & Replacement Standard
Factory-equipped 21-inch large tires come standard on all Sealion 8 / Atto 8 variants. Rotate tires every 7,000 km to balance wear across four wheels. Replace tires immediately if cracks, bulges appear, or tread depth drops below 1.6mm.
Trusted Channels To Buy Genuine OEM Parts For BYD Sealion 8 / Atto 8
Generic universal spare parts often cause loose fitting, system error codes or incomplete cabin coverage. For long-term vehicle reliability, factory-matched OEM parts remain the top choice for owners:
1. Local Authorized BYD Service Centers 100% original factory parts with full vehicle warranty support. Best for brake fluid, battery cooling parts and core chassis components for all regional Sealion 8 / Atto 8 models.
2. Global Official BYD Online Aftermarket Platform</strong><br>Supports online orders for standard consumables such as cabin air filters, port protective caps and rubber trim parts, shipped to Australia, NZ, Southeast Asia, Mexico and Middle Eastern countries.
3. Specialized BYD Model-Specific Aftermarket Retailers Ideal for interior protective trims, exterior guards and daily wear-resistant accessories, offering 3D-scanned parts matching the original cabin contour of Sealion 8 and Atto 8.
Final Long-Term Maintenance Advice
As BYD’s flagship seven-seat family SUV, the Sealion 8 (Australia/NZ/SEA) and Atto 8 (Mexico/Middle East) require stricter routine maintenance than compact urban EVs. Following the fixed mileage replacement schedule stabilizes battery performance, guarantees driving safety and preserves high resale value after years of use. Matching interior and exterior protective gear also prevents permanent scratches and stains on the premium factory cabin.
If you want gap-free, tailor-made protection matching the exclusive cabin layout of BYD Sealion 8 / Atto 8 flagship SUV, you can browse reliable model-specific BYD protective accessories built for this full-size 7-seater vehicle.