PHEV Charging Cost in Australia: When Plugging In Beats Petrol, and When It Doesn't

The PHEV charging cost in Australia ranges from under $1 to about $15 per 100 km, depending entirely on where you plug in. Charge at home on an overnight EV plan and electric driving costs under $2 per 100 km. Run the same car with a flat battery on petrol at $2.40 a litre and it costs about $14 per 100 km. Pay 75 cents per kWh at a public fast charger and electricity costs slightly more than petrol.

That last point surprises a lot of new owners. Plug-in hybrid sales almost doubled in 2025 to 53,484, according to the Electric Vehicle Council, and many of those buyers have no home charger. They want to know whether topping up at a public charger is worth it, whether they need to charge at all, and what the numbers really look like at the bowser.

This guide answers all three with current Australian prices. A plug-in hybrid (PHEV) is a car with a petrol engine and a battery you can charge from the grid. It drives on electricity until the battery runs low, then behaves like a regular hybrid.

PHEV charging cost in Australia: the per-100 km numbers

Home charging on an off-peak plan is the cheapest way to run a PHEV by a wide margin. Public DC fast charging is the most expensive, and often costs more than petrol.

The table below uses two assumptions. In electric mode, a typical mid-size PHEV uses about 20 kWh per 100 km measured at the wall. That figure comes from a 17 kWh per 100 km battery-side test of a BYD Sealion 6, plus around 12 percent charging losses. In hybrid mode with a depleted battery, it uses about 6.0 litres per 100 km, the middle of the figures below.

How you power it	Price (as of October 2026)	Cost per 100 km
Home, overnight EV plan	4.5 to 8 c/kWh	$0.90 to $1.60
Home, standard rate (Energex area)	27.97 c/kWh	$5.59
Home, standard rate (Ausgrid area)	33.14 c/kWh	$6.63
Home, standard rate (SA Power Networks area)	41.90 c/kWh	$8.38
Public AC charger	25 to 50 c/kWh	$5.00 to $10.00
Public DC fast charger	75 c/kWh	$15.00
Petrol, battery depleted (6.0 L/100 km)	240.5 c/L	$14.43

Petrol is the national average for regular unleaded in the week ending 11 October 2026, from the Australian Institute of Petroleum. Standard home rates are the maximum usage charges in the AER’s 2026-27 Default Market Offer, so a competitive retail plan can be cheaper. Overnight EV plans advertised in mid-2026 ranged from about 4.5 to 8 c/kWh.

Divide the petrol cost by 20 kWh and you get the break-even point: about 72 c/kWh. Pay less than that for electricity and charging saves money. Pay more and you are better off letting the engine do the work. For a thriftier PHEV that uses 4.8 litres per 100 km on a flat battery, the break-even drops to about 58 c/kWh.

Run your own numbers with our EV charging cost calculator.

Is it worth charging a PHEV at a public fast charger?

On price alone, DC fast charging rarely pays off in a PHEV. Sydney fast-charging prices collected in July 2026 ranged from 59 c/kWh on slower Chargefox units to 79 c/kWh on NRMA and Tesla sites at peak times. At the upper end you pay more per kilometre than petrol.

Owners of the Jaecoo J7 SHS see this play out on their dashboards. With a charged battery, the J7 reads well under 2 litres per 100 km around town. Once the battery drops to its reserve, it sits around 6 litres. Jaecoo itself claims 5.9 litres per 100 km with a depleted battery, and Drive measured 6.2 after the battery ran down on a 2026 test. At 75 c/kWh, though, a public top-up costs about the same as the petrol it replaces.

There are still good reasons to use a DC charger:

• Time. You are stopping anyway, and an EV-mode city leg is quieter and smoother.
• Cheaper sites. Some networks and regional chargers sit well under 72 c/kWh. Queensland’s government-owned Electric Super Highway listed 30 c/kWh in early 2026.
• Free charging. Workplace, shopping centre and council chargers that cost nothing change the maths completely.

Some PHEVs can’t fast charge at all. The new BYD Atto 2 DM-i has no DC charging and a 3.3 kW AC charger, according to CarExpert’s September 2026 launch coverage. Check the spec sheet before you assume a public charger is an option.

Do you have to charge a plug-in hybrid?

No, but a PHEV that never gets plugged in is an expensive hybrid. The car drives normally with a flat battery. The petrol engine powers the car and keeps the battery at a minimum reserve for acceleration and smooth running.

Fuel use in that mode is several times the official figure. Australian combined ratings for PHEVs are around 1 to 2 litres per 100 km because the test assumes you start with a full battery. Depleted, the picture changes:

Model	Claimed or tested fuel use, battery depleted	Source
BYD Sealion 6 (Essential/Dynamic)	4.8 L/100 km below 25% charge	BYD claim, reported by CarsGuide (2025)
Jaecoo J7 SHS	5.9 L/100 km	Jaecoo claim, reported by CarExpert (2025)
Jaecoo J7 SHS	6.2 L/100 km after battery ran down	Drive test (2026)
Mitsubishi Outlander PHEV	6.7 L/100 km from empty	Mitsubishi (2022 model)

Real-world data shows how much charging behaviour matters. An Electric Vehicle Council survey of 625 private PHEV owners in 2024 found about 65 percent of trips were done in electric mode. Overseas, the International Council on Clean Transportation’s 2020 study of around 100,000 European PHEVs found private cars covered only 37 percent of their kilometres on electricity. In practice, the gap between the brochure and your fuel bill comes down to how often you plug in.

If you have no home charging, a PHEV can still make sense as a hybrid for long trips. Just budget on the depleted fuel figure, not the brochure figure. Our EV vs hybrid comparison covers that decision in more detail.

Charging a PHEV at home: powerpoint or wall charger?

A standard 10 amp powerpoint is enough for most PHEVs. Their batteries are small, typically 18 to 30 kWh. A powerpoint delivers about 2.3 kW, so an 18 kWh battery refills from its reserve in roughly 7 to 9 hours. A wall charger only becomes worth it if you have a larger battery like the Shark 6’s, a car with a faster onboard charger, or a short overnight window on a cheap tariff.

PHEV (Australian spec)	Battery	Claimed EV range	DC fast charging
BYD Atto 2 DM-i Premium	18.03 kWh	90 km (WLTP)	No
BYD Sealion 6	18.3 kWh	92 km (NEDC)	18 kW
Jaecoo J7 SHS-P (2WD)	18.4 kWh	100 km (NEDC)	40 kW
Geely Starray EM-i Complete	18.4 kWh	83 km (WLTP)	30 kW
GWM Haval H6 PHEV Ultra	19.09 kWh	106 km (ADR)	34 kW
Mitsubishi Outlander PHEV	22.7 kWh	86 km (WLTP)	Yes (CHAdeMO)
Toyota RAV4 PHEV (2WD)	22.7 kWh	121 km (WLTP)	50 kW
BYD Shark 6	29.58 kWh	100 km (cycle not stated)	55 kW

Watch the test cycle. NEDC is an older, more generous test than WLTP, so a 100 km NEDC claim usually means less real range than a 90 km WLTP claim. Sources include the Jaecoo J7 SHS page and Australian launch coverage from 2025 and 2026.

Charging efficiency is the hidden cost of the powerpoint. German motoring club ADAC measured losses of 5 to 7 percent on a wallbox but 13 to 24 percent from a household socket in its 2025-26 tests. On a PHEV doing 10,000 electric kilometres a year, that difference adds up to roughly 200 to 300 kWh. At an 8 c/kWh overnight rate that is about $20. At a 33 c/kWh standard rate it is closer to $80. A wall charger rarely pays for itself on efficiency alone.

The bigger saving is the tariff. Moving your charging from a 33 c/kWh standard rate to an 8 c/kWh overnight EV plan cuts about $5 off every 100 electric kilometres. Our guide to the best electricity plans for EV owners compares the current overnight offers, and the same plans work for plug-in hybrids.

PHEV battery care, stale fuel and running in the engine

A PHEV is easy on its battery if you charge it daily, and the engine needs occasional use. Three questions come up repeatedly from new owners.

Does charging to 100 percent every day wear the battery out? It adds a little wear, but PHEVs protect themselves. BYD’s PHEVs hold back the bottom 25 percent of the battery in normal driving, according to Chasing Cars, so you never fully run them flat. ADAC and battery-testing firm Aviloo studied more than 28,000 PHEVs in Europe in 2025 and found average battery health of about 88 percent at 100,000 km. Cars driven more in electric mode wore slightly faster, but still sat well above the 70 percent threshold most battery warranties use. If your daily drive is short, you can set a lower charge limit in the car’s app.

Does the petrol go stale? It can, if months pass without the engine running. Many PHEVs run the engine on their own from time to time to keep it lubricated and burn older fuel, even in EV mode. Your owner’s manual sets the schedule. Owners who rarely use petrol tend to put in a part tank at a time, and avoid ethanol blends, which absorb moisture over time.

Do you need to run the engine in? Some owners report being advised to mix petrol and electric driving for the first few thousand kilometres. Requirements differ by brand, so follow your manual rather than forum advice.

What the tax rules mean for PHEV charging costs

PHEVs lost the FBT exemption on 1 April 2025. Cars already exempt under a binding lease before that date keep it, but changing the lease or extending it ends the exemption, according to the ATO.

One tax change runs the other way. The ATO updated its EV home charging rate guidance in November 2025 to cover the electric kilometres of plug-in hybrids. The rate is 5.47 cents per electric kilometre from 1 April 2026, per the ATO’s FBT rates and thresholds. It lets you value home charging without separate metering. Some lease providers have been slow to adopt it, so ask yours directly.

Who saves the most from charging a PHEV

The households that save most have three things in common: home charging, an overnight tariff, and a daily drive inside the electric range. A driver doing 60 km a day in electric mode on an 8 c/kWh plan spends about $350 a year on charging. The same driver running on petrol with a flat battery spends about $3,160 at today’s prices. That is a saving of roughly $2,800 a year.

Daily electric km	Annual charging cost (8 c/kWh)	Annual petrol cost (6.0 L/100 km at 240.5 c/L)	Saving per year
30 km	$175	$1,580	~$1,400
60 km	$350	$3,160	~$2,800
90 km	$526	$4,740	~$4,200

Drivers who charge only at public DC sites save almost nothing, and sometimes lose money. If that describes you, a pure EV with a larger battery charges far less often, or a conventional hybrid costs less to buy. Our guide to plug-in hybrid cars in Australia covers which buyers a PHEV suits best, and our electric vehicles hub lets you compare running costs model by model.