Full report · BYD Sealion 6 · Cavite, PH · Dec 2025 – Mar 2026

PHEV mileage & running cost — full analysis

Per-refuel and cumulative efficiency, electric-vs-fuel running cost, usage split, anomalies, and projections for a BYD Sealion 6.

Published 15 May 2026

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BYD Sealion 6 · 5 fill-ups tracked · Dec 2025 – Jun 2026

Disclaimer: Efficiency figures, cost calculations, and usage splits are derived from odometer and meter readings you provide. Accuracy depends on the accuracy of those inputs. Values are for personal tracking purposes and should not be used for warranty claims, tax filings, or official reporting without independent verification.

Generated by PHEV Tracker: https://github.com/marfillaster/phev-tracker

Last Refuel

Cumulative

Usage: 24% F / 76% EV (last) · 34% F / 66% EV (cumulative)

* Combined efficiency: EV cost converted to equivalent fuel liters

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Executive Summary

7,234 km tracked · ₱25,200 spent · 66% EV usage

Saving ~₱14,600 vs an equivalent ICE SUV · ~540 kg CO₂ avoided. EV share is climbing — 76% of the last interval vs 66% cumulative — pulling the blended figure down to 4.8 L/100km. Battery healthy at 99% SOH (~46 charge cycles). Next PMS milestone is 40,000 km — ~10,300 km away.

AI Analysis

• Combined consumption improved last interval: 4.8 L/100km vs 5.8 cumulative, driven by a higher 76% EV share.
• EV side rock-steady at 5.7 km/kWh both last and cumulative — no drift as the odometer climbs to 29,655 km.
• Fuel side ran slightly richer last interval (9.0 vs 8.7 L/100km cumulative), but on a small 509 km HEV sample it is within noise.
• Trend is favorable: more electric driving keeps lowering the blended figure over time.

• EV is roughly half the cost per km: ₱2.58/km cumulative vs ₱5.27/km on fuel.
• Both energy prices rose last interval — tariff stepped up to ₱15.5/kWh (from ₱14.5) and pump price to ~₱78/L (vs the ~₱60.55/L lifetime average), lifting EV cost/km to ₱2.73 and fuel cost/km to ₱6.99.
• The widening fuel-vs-EV gap reinforces charging over refuelling wherever range allows; off-peak charging would compound the saving.

• EV share is trending up: 66% cumulative → 76% last interval. The electric majority is now structural, not occasional.
• Of 7,234 km tracked, 4,806 km (66%) were electric — most daily driving is covered before the engine starts.

• The last interval (2026-03-08 → 2026-06-17) spans 101 days and 2,111 km — far longer than the earlier ~13–30 day, ~500–1,200 km intervals. It dominates recent averages.
• Both fuel and electricity prices stepped up this interval; worth watching whether the tariff increase holds.

• Mid-size SUV PHEV benchmark: ~8.3–10 L/100km fuel, 5.5–6.5 km/kWh EV, ₱3–4/km combined. Your 5.7 km/kWh EV and ₱3.48/km combined sit comfortably inside the band.
• Versus a pure ICE mid-size SUV (₱5–7/km), the PHEV is running well under half the running cost on the electric majority of trips — the source of the ~₱14,600 lifetime saving.

• Keep the EV share high; it is the single biggest lever on both cost and CO₂.
• With energy prices rising, prioritise charging and off-peak tariffs over refuelling.
• SOH was last measured 2026-03-07. Re-check by ~September 2026 (6-month cadence) to confirm the 99% reading holds.
• Book the 40,000 km / annual PMS ahead of the milestone (~10,300 km away); acquired 2024-09, so the time-based service is also due.

Inferred Insights

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Data Sources

• data/phev_log.csv - refuel log (odometer, plug meter, fuel, tariff) backing every figure above