BYD Atto 3 vs Mitsubishi ASX (petrol): 5-year cost to own (NZ)

Q: Is the BYD Atto 3 or the Mitsubishi ASX (petrol) cheaper to own over 5 years in New Zealand?

The Mitsubishi ASX (petrol) stays the cheaper car to own — about $48,309 vs $61,253 for the BYD Atto 3, a $12,944 difference over 5 years.

Q: When does the BYD Atto 3 become cheaper than the Mitsubishi ASX (petrol)?

The BYD Atto 3 pulls ahead of the Mitsubishi ASX (petrol) if you drive more than about 28,500 km/yr. Cheaper home charging flips it sooner.

Q: How much more does the BYD Atto 3 cost to buy than the Mitsubishi ASX (petrol)?

The BYD Atto 3 starts at $52,990 — $21,000 more than the Mitsubishi ASX (petrol) ($31,990). Over 5 years the ownership gap is $12,944 in favour of the Mitsubishi ASX (petrol).

Q: Which costs less per km — the BYD Atto 3 or the Mitsubishi ASX (petrol)?

The Mitsubishi ASX (petrol): $0.69 vs $0.88 per km all-in ($805 vs $1,021 per month).

By the EVCostIQ research desk · reviewed against our public methodology · every source dated on this page

Over 5 years in New Zealand (14,000 km/yr), as of July 1, 2026, the Mitsubishi ASX (petrol) stays the cheaper car to own — about $48,309 vs $61,253 for the BYD Atto 3, a $12,944 difference over 5 years.

No EV purchase rebate in NZ (the Clean Car Discount ended Dec 2023), and EVs now pay Road User Charges (~NZ$76/1,000 km). Both are reflected honestly — the RUC is included in the totals above. Source: NZTA.

Cheaper to own over 5 years · NZMitsubishi ASX (petrol) · $48,309 total · $12,944 less than the BYD Atto 3

BYD Atto 3 vs Mitsubishi ASX (petrol) — where the money goes

5-year total cost of ownership by component, by vehicle (NZD). Estimates; sources dated in the methodology.
Cost component	Electric · BYD Atto 3	Petrol · Mitsubishi ASX
Depreciation (estimated)	$30,734 (50%)	$15,355 (32%)
Charging / fuel	$5,625 (9%)	$15,800 (33%)
↳ of which charging loss	12% (~$675)	—
Maintenance	$2,247 (4%)	$4,501 (9%)
Insurance	$7,000 (11%)	$6,335 (13%)
Financing interest	$9,402 (15%)	$5,452 (11%)
Registration & fees	$6,245 (10%)	$865 (2%)
Total cost of ownership	$61,253	$48,309

When does the BYD Atto 3 win?

The BYD Atto 3 pulls ahead of the Mitsubishi ASX (petrol) if you drive more than about 28,500 km/yr. Cheaper home charging flips it sooner.

BYD Atto 3 vs Mitsubishi ASX (petrol), side by side

Electric

BYD Atto 3

5-yr total cost: $61,253
Cost / month: $1,021
Cost / km: $0.88
Starting price: $52,990
Powertrain: Electric
Efficiency: 16 kWh/100km

Petrol Lower 5-yr cost

Mitsubishi ASX (petrol)

5-yr total cost: $48,309
Cost / month: $805
Cost / km: $0.69
Starting price: $31,990
Powertrain: Petrol
Efficiency: 7.6 L/100km

NZ electricity: 34.00c/kWh EA / MBIE
Petrol (NZ): $2.97/L MBIE

FAQ

Is the BYD Atto 3 or the Mitsubishi ASX (petrol) cheaper to own over 5 years in New Zealand?

The Mitsubishi ASX (petrol) stays the cheaper car to own — about $48,309 vs $61,253 for the BYD Atto 3, a $12,944 difference over 5 years.

When does the BYD Atto 3 become cheaper than the Mitsubishi ASX (petrol)?

The BYD Atto 3 pulls ahead of the Mitsubishi ASX (petrol) if you drive more than about 28,500 km/yr. Cheaper home charging flips it sooner.

How much more does the BYD Atto 3 cost to buy than the Mitsubishi ASX (petrol)?

The BYD Atto 3 starts at $52,990 — $21,000 more than the Mitsubishi ASX (petrol) ($31,990). Over 5 years the ownership gap is $12,944 in favour of the Mitsubishi ASX (petrol).

Which costs less per km — the BYD Atto 3 or the Mitsubishi ASX (petrol)?

The Mitsubishi ASX (petrol): $0.69 vs $0.88 per km all-in ($805 vs $1,021 per month).