Hyundai Ioniq 6 (77kWh RWD) vs Mazda CX-5 (petrol): 5-year cost to own (NZ)

By Ivan H., EVCostIQ · reviewed against our public methodology · every source dated on this page

Over 5 years in New Zealand (14,000 km/yr), as of July 9, 2026, the Mazda CX-5 (petrol) stays the cheaper car to own — about $56,577 vs $81,393 for the Hyundai Ioniq 6 (77kWh RWD), a $24,816 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 · NZMazda CX-5 (petrol) · $56,577 total · $24,816 less than the Hyundai Ioniq 6 (77kWh RWD)

Hyundai Ioniq 6 (77kWh RWD) vs Mazda CX-5 (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 · Hyundai Ioniq 6	Petrol · Mazda CX-5
Depreciation (estimated)	$46,394 (57%)	$21,595 (38%)
Charging / fuel	$5,028 (6%)	$15,384 (27%)
↳ of which charging loss	12% (~$603)	—
Maintenance	$2,247 (3%)	$4,501 (8%)
Insurance	$7,000 (9%)	$6,335 (11%)
Financing interest	$14,480 (18%)	$7,897 (14%)
Registration & fees	$6,245 (8%)	$865 (2%)
Total cost of ownership	$81,393	$56,577

When does the Hyundai Ioniq 6 (77kWh RWD) win?

The Mazda CX-5 (petrol) wins decisively here — $24,816 cheaper over 5 years; at typical assumptions this isn't a close call.

No realistic annual distance flips this verdict — the Mazda CX-5 (petrol) stays the cheaper car at every distance we model.

What decides the Hyundai Ioniq 6 (77kWh RWD) vs Mazda CX-5 (petrol) verdict

The single biggest mover is depreciation: $46,394 on the Hyundai Ioniq 6 (77kWh RWD) against $21,595 on the Mazda CX-5 (petrol), a $24,799 gap in the Mazda CX-5 (petrol)'s favor — the largest slice of the $24,816 verdict. On the Hyundai Ioniq 6 (77kWh RWD), depreciation alone is 57% of its $81,393 total; on the Mazda CX-5 (petrol) it is 38% of $56,577.

Energy: $5,028 of charging for the Hyundai Ioniq 6 (77kWh RWD) vs $15,384 of petrol for the Mazda CX-5 (petrol) — $10,356 the other way, to the Hyundai Ioniq 6 (77kWh RWD).
Financing interest: Hyundai Ioniq 6 (77kWh RWD) $14,480, Mazda CX-5 (petrol) $7,897 — $6,583 more in the Mazda CX-5 (petrol)'s favor.
Registration & fees: Hyundai Ioniq 6 (77kWh RWD) $6,245, Mazda CX-5 (petrol) $865 — $5,380 more in the Mazda CX-5 (petrol)'s favor.

Energy is the Hyundai Ioniq 6 (77kWh RWD)'s strong suit: $10,356 back, 42% of the Mazda CX-5 (petrol)'s lead — just not enough to turn it. At the dealer the Hyundai Ioniq 6 (77kWh RWD) starts $35,000 behind the Mazda CX-5 (petrol); running costs claw back $10,184 of that, but the Mazda CX-5 (petrol) still ends $24,816 ahead. The Mazda CX-5 (petrol) is ahead by $10,251 after the first year and more than doubles that lead — $24,816 by year 5.

Hyundai Ioniq 6 (77kWh RWD) vs Mazda CX-5 (petrol), side by side

Electric