75,000 km Long-Term Ownership Review: 2023 BYD Atto 3 Extended Range — Blade Battery SOH (97.5%), Servicing Costs & Wear Items
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Just ticked over 75,000 km (46,600 miles) in our Surf Blue 2023 BYD Atto 3 Extended Range (60.48 kWh) here in Melbourne, and since I started logging every charge and service on Day 1, here is the brutally honest long-term report card.
1. Blade Battery Health (SOH) at 75,000 km
Plugged in my Vgate vLinker MC+ OBD2 dongle with CarScanner Pro this morning after a full 8% → 100% AC calibration charge:
- BMS Reported State of Health (SOH): 97.5%
- Cell Voltage Delta at 100%:
0.006V(6 millivolts across all 126 LFP cells — basically factory fresh!) - Charging Habits: ~80% home 7kW solar/off-peak AC charging (charged to 100% twice a week), ~20% DC fast charging on highway trips down to Geelong and Gippsland.
2. Total Maintenance & Repairs Over 75,000 km
- 20k, 40k, 60k Logbook Services: Stuck to the capped-price schedule (brake fluid at 40k, reduction gear oil at 40k, cabin filters I swap myself in 2 minutes behind the glovebox for $18).
- Tyres: Swapped the terrible factory Atlas Batman A51 tyres at 24,000 km for Michelin Primacy 4 ST (235/50R18). Still have 4.2mm tread left on the Michelins after 51,000 km!
- Brakes: Original factory pads still have 7.5mm of meat left because regenerative braking does 90% of the stopping.
- Warranty Claims: Had the 12V auxiliary lead-acid battery replaced under warranty at 31,000 km, and the driver's interior door pull cable adjusted once. Zero drivetrain or HV faults.
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6 millivolts cell delta at 75,000 km is why LFP Blade chemistry is in a league of its own. We're at 55,000 km on our 2023 Atto 3 down in Christchurch NZ (including freezing South Island winters) and our OBD2 SOH reads 98.1%. Haven't noticed a single kilometre of real-world range loss.
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Totally agree on doing the reduction gear oil change at 40,000 km! Some people try to skip it, but draining the initial break-in metallic sheen off the magnetic drain plug on the electric drive unit keeps the gearset whisper-quiet for the life of the car.
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A admin moved this topic from BYD Compact SUVs & Hatch
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