Is an EV Worth It at High km? What 30,000 to 40,000 km a Year Actually Costs

Is an EV worth it at high km? Against a diesel ute or a petrol SUV, usually yes, because the running-cost gap is big enough to absorb heavy depreciation. At 40,000 km a year, we estimate about $6,420 a year less energy cost than a HiLux and about $5,560 less than a petrol SUV, at October 2026 prices. Against a small hybrid the gap is only about $1,555, so that decision is much closer.

Most online calculators assume a suburban commute, which undersells both the upside and the risks. High kilometres multiply the fuel saving, but they also burn through a battery warranty’s kilometre cap in under five years and push home charging closer to its limits.

Three things decide it: where you charge most nights, how the warranty treats your use, and what the car will be worth with 150,000 km on it. Here is how each one works. For model specs and pricing, start with our electric vehicle guide. If you drive far less, see our companion piece on whether an EV is worth it at low km.

Is an EV Worth It at High km on Running Costs Alone?

Yes, provided about 90% of your charging happens at home. Public DC charging at the full rate costs more than running a small hybrid on petrol.

We compared annual energy at 30,000 km and 40,000 km. Fuel uses the Australian Institute of Petroleum’s national retail average for the week ending 25 October 2026: 279.3 c/L for diesel and 238.4 c/L for petrol. The HiLux uses CarExpert’s claimed 7.6 L/100 km for the 2.8 Rogue. The petrol SUV is our assumption of 8.0 L/100 km, and the hybrid is the Toyota Yaris Cross Hybrid at 3.8 L/100 km, which is a best case. The EV uses an assumed 18 kWh/100 km for country highway driving, excluding charging losses.

Electricity is the Australian Energy Regulator’s 2026-27 default offer for Essential Energy in regional NSW: 35.01 c/kWh flat, or 24.15 c/kWh overnight on time-of-use. Check your own distributor. Public DC is 70 c/kWh, near the middle of the 59 to 79 c/kWh Sydney peak rates CarsGuide reported in July 2026.

Annual energy cost	30,000 km	40,000 km
Diesel HiLux, 7.6 L/100 km	$6,368	$8,491
Petrol SUV, 8.0 L/100 km	$5,722	$7,629
Small hybrid, 3.8 L/100 km	$2,718	$3,624
EV, 90% home overnight and 10% public DC	$1,552	$2,069
EV, home flat rate only	$1,891	$2,521
EV, public DC only	$3,780	$5,040

So the 90/10 EV saves about $6,420 a year against the HiLux at 40,000 km and about $4,820 at 30,000 km. CarExpert’s reviewer recorded 8.9 L/100 km in the same HiLux, which would add about $1,450 to the diesel bill at 40,000 km. You can run your own rates through the EV charging cost calculator.

Servicing widens the gap at this distance, because service visits follow kilometres. The HiLux Rogue’s capped-price plan is $3,950 for 10 visits at 10,000 km intervals, or about $395 a visit, so 40,000 km means roughly $1,580 a year. A BYD Atto 3 has 20,000 km intervals and averaged $341 a service in CarExpert’s October 2024 comparison, so about $680. An MG4 averaged $558 for a 40,000 km interval. Prices will have moved since, so treat these as a guide.

Two costs push the other way. EVs tend to wear tyres faster. Michelin Australia says so without giving a number, and UK fleet data from Epyx puts the first tyre change at about 28,800 km against 38,900 km for petrol cars. At 40,000 km, budget on a set every year. The other is road user charging. NSW has legislated 3.095 c/km from July 2027, which would cost about $1,240 a year at 40,000 km if it survives, as our road user charge guide explains.

Owner-reported numbers line up with the sums. One regional Victorian owner running a BYD Atto 3 at about 42,000 km a year reports about $5,500 a year all in, including insurance and tyres, or about $13 per 100 km. They compare that with about $29 per 100 km for their petrol X-Trail.

How Fast You Hit a Battery Warranty’s km Cap

Most battery warranties run out on kilometres well before years at this distance. A 7 or 8 year warranty is really a 4 or 5 year warranty if you drive 40,000 km a year.

Brand	Battery warranty (as of November 2026)	Reaches km cap at 30,000 km a year	At 40,000 km a year
GWM (including Ora 5)	8 years, unlimited km	Year 8	Year 8
Geely EX5	8 years, unlimited km	Year 8	Year 8
Tesla Long Range and Performance	8 years, 192,000 km	6.4 years	4.8 years
Tesla RWD	8 years, 160,000 km	5.3 years	4 years
BYD	8 years, 160,000 km	5.3 years	4 years
Hyundai, Volvo, Polestar, Zeekr, BMW	8 years, 160,000 km	5.3 years	4 years
Kia, model year 2027 onward plus EV4	8 years, 160,000 km	5.3 years	4 years
Kia, before model year 2027	7 years, 150,000 km	5 years	3.75 years
MG	7 years, 150,000 km	5 years	3.75 years

Unlimited-km battery cover is rare. Current Tesla terms have kilometre caps, whatever you may have heard about older Model S cars. MG’s headline 10 years or 250,000 km is a vehicle warranty, and MG lists the high-voltage battery separately. GWM’s page confirms 8 years and unlimited km on EV battery packs, though at least one review suggests limits for non-private use, so get that confirmed for yours. Our full EV battery warranty guide covers more brands and how to make a claim.

Expiry doesn’t mean failure, and Australian Consumer Law guarantees don’t simply vanish with the written warranty. It does change the resale conversation, because a buyer will check what cover remains. Warranties can usually move with the car. Kia’s terms allow transfer to a new owner through a change-of-owner form.

The commercial use trap

Check this before you do anything else if the car earns money. Business use can move you onto a shorter warranty, and the definition is wider than taxis.

Kia’s August 2026 terms define commercial use as including rental, hire, taxi, rideshare, courier, driving school, security and bus or tour use, and they say “not limited to” those examples. Any commercial use at any time in the warranty period caps the car at 7 years or 150,000 km, and owners may have to prove their usage history. MG’s definition also says “at any time”, applies 7 years or 160,000 km, and removes the 10-year extension.

Some brands go shorter. Hyundai lists 5 years or 130,000 km for commercial vehicles. CarExpert’s January 2026 survey lists Zeekr at 3 years or 120,000 km. XPeng lists 7 years or 160,000 km.

The grey area is a tradie, a sales rep or someone doing regular deliveries for their own online store. Hyundai’s table separates “private/business” from “commercial”, which suggests ordinary business use sits in the private tier. Nobody we checked gives a clear answer for those cases. Ask in writing before you sign, and keep the reply.

What Happens to Resale After 150,000 km?

Expect steep depreciation, but at high kilometres it often matters less than the running costs. Nobody publishes good Australian data on EV values by odometer band, so treat any confident figure with suspicion.

What we do have points to a weak used market overall. A September 2025 analysis reported in The Nightly put two-year retention at 58% for the Tesla Model Y, 54% for the Model 3 and Atto 3, and 50% for the MG4, against 85% for the HiLux and 76% for the Ranger. Those figures are for typical vehicles, not high-km ones. They also reflect a period of falling new EV prices, as our EV depreciation guide explains.

The high-km owner above checked asking prices for their model. Cars with 25,000 km to 35,000 km were listed at $33,000 to $35,000, and those with 120,000 km to 130,000 km at about $25,000, against about $47,000 new. Those are asking prices rather than sale prices. They suggest losing about $22,000 over four years, or about $5,500 a year.

Now compare what running costs buy you. Against the HiLux at 40,000 km, the energy and servicing savings total about $7,320 a year. Over four years that covers about $29,000 of extra depreciation. Against the hybrid, the energy saving is about $1,555 a year, or about $6,200 over four years, so a high-km EV has to be close on purchase price and resale to beat it. Insurance, finance and rego sit outside these sums.

A diesel ute also has a job an EV can’t always do. If you carry heavy loads, tow often or go off the bitumen for work, compare what’s actually available in our electric ute guide before assuming the sums apply.

Will the Battery Survive 150,000 km and Beyond?

Very likely, based on what high-km Australian EVs show so far. The evidence is still limited, but it is encouraging.

• Pickles (February 2025): more than 250 used EVs averaged 90.1% battery health at 120,000 km.
• Splend (2025): more than 1,100 readings from its rideshare fleet averaged 94% to 95% state of health.
• A WA rideshare Tesla Model 3 (reported by EV Central, August 2025): about 410,000 km on its 2021 LFP battery, with health extrapolated at 88% to 90%. That is one car, using data from its battery management system.

The overseas picture agrees but adds a caution. Geotab’s January 2026 study of more than 22,700 EVs found an average loss of 2.3% a year, with high-use vehicles losing an extra 0.8 points. Cars mainly using DC above 100 kW lost up to 3.0%, against about 1.5% for mainly AC charging.

Age and use both count, and that favours driving the car hard. A battery that has done 160,000 km in four years has had four years of calendar ageing, not eight. Still, get an independent battery health report before you sell, or before you buy someone else’s high-km car. The NRMA’s 2026 checks found 15 of 50 EVs below average for their age, so results vary.

Can You Charge Enough at Home for 100 km or More a Day?

From a 10 amp socket, only just. At 40,000 km a year you average about 110 km a day, or about 160 km if you only drive on working days.

Home charging	Range added per hour	Range added in 12 hours
10 amp socket, about 2.2 kW	10 to 15 km	120 to 180 km
15 amp socket, 3 kW to 3.7 kW	15 to 20 km	180 to 240 km
7 kW wall charger	30 to 40 km	360 to 480 km

Rates from the WA Government’s EV guide. Hourly range varies with the car and speed.

So a standard socket can keep up on average, with no spare capacity after a long day or a run of them. A high-km driver is exactly who a wall charger makes sense for. Installed cost for a 7 kW unit is typically about $1,200 to $3,200, and our EV charger installation guide explains what moves that price. At this distance, moving one or two public DC charges a month onto home power pays back quickly. Have an electrician check any circuit you will load for hours each night, and skip the extension leads.

Solar helps less than the brochures imply. A high-km car is usually away from home during the best generating hours. Owners do manage it, but the ones who report covering about half their driving from solar work from home and leave the car plugged in during the day. If your car is on the road from 8 until 5, count on overnight grid power and look for a cheap overnight rate. Some EV plans quote 8 c/kWh or less overnight, though availability varies by distributor, and at that rate home energy for 40,000 km falls to under $600 a year.

If you can’t get more than 10 amps and don’t want a large public charging bill, a plug-in hybrid may fit better. It gives up the FBT exemption and still uses fuel on long runs, but it doesn’t depend on a charger each night.

Is the Regional Charging Network Good Enough?

On major NSW and Victorian highways, mostly yes. Plan for a daily stop only if your home charging can’t cover the day, because fast charging is your expensive fallback.

The NSW Government’s fast charging program has a $149 million budget and plans stations about every 100 km on major highways. On the Riverina and Hume routes, it lists sites at Wagga Wagga, Albury, Gundagai and Yass (Tesla), Holbrook and Goulburn (Ampol), and Queanbeyan (NRMA). That list doesn’t cover every public charger, so check an app before you rely on one. The Australian Electric Vehicle Association’s 2026 volunteer audit of the Hume rated it B+ across 221 plugs at 45 locations, with about 6% of CCS2 plugs out of service.

Range matters more here than in the city. A car sized for your longest regular run avoids paying public rates for a stop you didn’t need, and our guide to how much EV range you need shows how to work that out.

Business Buyers: What the Tax Rules Change

Less than you might hope for a sole trader, and more for a company with employees. Check your position with an accountant, because these are general rules.

• Instant asset write-off: the ATO lists a $20,000 per-asset threshold, so most new EVs miss it and go through normal small business depreciation instead.
• Car limit: the 2026-27 depreciation limit is $69,883, according to the ATO.
• Cents per km: the rate is 91c for 2026-27 but capped at 5,000 km, so high-km business drivers usually need a logbook.
• Home charging rate: tax advisers report the ATO’s shortcut rose from 4.20 c/km to 5.47 c/km, from 1 April 2026 for FBT and 1 July 2026 for income tax. Check the current ATO guidance before you claim it.
• FBT exemption: it applies to cars provided to employees or their associates, so a sole trader with no employees doesn’t appear to fit.

Treasury’s September 2026 draft law would keep the full exemption for cars up to $75,000 committed before 1 April 2029, with a 25% discount above that. It isn’t law yet. If you’re salary packaging at high kilometres, our high-km novated lease guide covers the lease side.