BYD Atto 3 — Fluids, Capacities & Specifications
From the official Australian owner’s manual (archived, 210 pages): the Atto 3’s serviceable fluids come down to three — a gear-reducer oil measured in millilitres (Castrol BOT384, 600±50 mL, changed every 2 years/40,000 km), motor coolant (3.2 L), and brake fluid (DOT4 or its HZY6 equivalent — both officially accepted). And BYD publishes what most brands keep internal: complete brake wear ranges and wheel-alignment values, reproduced below for the workshops that need them.
Fluids — official specifications
| Item | Specification | Amount | Official change rhythm |
|---|---|---|---|
| Gear (reducer) oil — NT30 | Castrol BOT384 (recommended) or Castrol ON D2 | 600±50 mL | First at 24 mo/40,000 km, then every 24 mo/40,000 km |
| Motor coolant | Glycol organic-acid (OAT), −25/−40 grade | 3.2±0.5 L | per schedule inspections; dealer-serviced circuit |
| Brake fluid | DOT4 or HZY6 | 1,050±50 mL | per schedule |
Source: official BYD Atto 3 owner’s manual, Australian edition (Vehicle Data pp. 198–199; maintenance schedule pp. 164–166; archived with checksum). Note the HZY6 listing: BYD officially accepts the Chinese-standard equivalent alongside DOT4 — useful knowledge when a bottle’s label confuses a workshop. The coolant circuit serves the drive system — treat it as high-voltage-adjacent and dealer-only.
BYD’s maintenance rhythm — different by design
- The universal pattern: first check at 3 months/5,000 km, then every 12 months/20,000 km — matching the A/B service structure.
- Suspension & alignment run a 24-month cycle — halved to 12 months under severe conditions (dust, rough roads, towing). Rural owners: you’re on the short schedule.
- Battery capacity test & calibration: every 6 months or 72,000 km (as printed) — the routine that keeps range estimates honest and the SoH record warranty-ready.
- Tyre rotation every 10,000 km; pressures monthly (250 kPa / 36 psi all round).
- The schedule names EPS earthing and connector checks explicitly — echo of the 2022–23 steering-unit campaign, now institutionalised as inspections.
Powertrain — official data
| Motor | TZ200XSQ permanent-magnet synchronous — peak 150 kW / 310 Nm (rated 65 kW) |
| Battery | Blade LFP, 150 Ah rated — LFP chemistry: charging to 100% routinely is appropriate (unlike NMC packs) |
| Official consumption | ≤14.8–14.9 kWh/100 km |
| Kerb weight | 1,680 / 1,750 kg by version |
Workshop data — official wear limits
| Front brake disc | 24–26 mm serviceable range |
| Rear brake disc | 10–12 mm |
| Front pads | 2–8 mm |
| Rear pads | 2–6.5 mm |
| Brake pedal free stroke | ≤5 mm |
| Alignment (kerb) | front camber −0.9°±0.75 · caster 3.23°±0.75 · rear camber −1.07°±0.5 (full toe values in the archived manual) |
The richest official brake-limit set we’ve documented on any brand — and on a regen-braking EV, discs corrode before they wear: pair these limits with a visual rust check at every rotation.