EV vs Petrol: The Five-Year Sum, and the Numbers Only You Can Fill In

Two cars can look close on the sticker price and miles apart after five years of ownership. The difference comes down to a short list of variables: how far you drive, where you charge, what you pay for electricity, what the car costs to buy and what it is worth when you sell it. This guide looks at each variable in turn, and which way it usually pushes the numbers.

It does not put a dollar figure on five years of ownership. Those figures change with your postcode, your tariff and your model choice, and any article quoting national averages will be wrong for most readers. The useful version of this comparison is structural: which costs rise, which fall, and what to check before you commit.

Long-Term Value of Electric Vehicles (EVs)

Purchase price. An electric car usually costs more than a petrol car of similar size. That gap has narrowed as more models have arrived, but it has not closed, and it is the single biggest number in the five-year sum. Any running-cost advantage has to earn back that difference over the years you keep the car.

Energy. Electricity is generally the cheapest way to move a car, and charging at home is the cheapest way to buy electricity. A driver with a driveway and an off-peak or solar tariff gets the best version of this. A driver relying on public fast chargers pays considerably more, though still usually less than petrol on a per kilometre basis. Your electricity plan matters as much as the car.

Servicing and wear. Electric drivetrains have far fewer moving parts, no oil changes and no exhaust system, so scheduled servicing is simpler. Regenerative braking also does much of the slowing, which stretches brake life. Both effects show up as lower maintenance over five years, though not zero: tyres, suspension, cabin filters and software all still need attention.

Incentives. State and territory programs have come and gone as EV uptake has grown. Some registration or stamp duty concessions remain in place, others have closed. Check your state’s current scheme rather than trusting a figure from a couple of years ago, and do it before you sign anything.

Resale value. This is the least settled part of the equation. The used EV market is younger, battery condition is harder for a buyer to judge, and new model releases move values. Resale will depend heavily on the specific model, its battery health and how fast the segment keeps changing.

Long-Term Value of Fuel Vehicles

Purchase price. A petrol car remains the cheaper way in, both new and used. The used market is deep and competitive, which means more choice at every budget and more room to negotiate.

Fuel. This is the cost that scales with every kilometre and every pump price rise. A fuel-efficient car softens the blow, but the exposure to petrol prices never goes away. For high-kilometre drivers, this line item is where the five-year comparison is usually decided.

Servicing. Petrol cars have more routine items to replace: oil, filters, belts, spark plugs. The trade-off is that servicing is cheap, quick and available almost everywhere, and parts are easy to source. Budgets are predictable because the schedule is well understood.

Refuelling and range. Filling a tank takes minutes and the network is everywhere. For long regional drives, towing, or anyone who cannot charge at home, this remains the practical argument for petrol, and it is a strong one.

Resale value. Depreciation on a petrol car is generally more predictable because the market is mature. It is not better, just easier to forecast.

Time Efficiency: EVs vs. Fuel Vehicles

The time question is usually framed as charging versus refuelling, but that is only half of it. A petrol car trades a few minutes at the pump for the trip to get there, repeated every week or two. An electric car charged at home removes that errand entirely: the car refills overnight while you sleep, and you start most days with a full battery.

The balance tips the other way on long trips. Fast chargers add time to a journey that petrol would not, and a driver without home charging will spend regular time at public chargers. For a household with a driveway and a mostly local routine, the EV wins the time comparison. For a driver doing long regional runs every week, it does not.

The other time item is servicing. Fewer moving parts mean fewer workshop visits over five years, which is a quiet but real saving for anyone who has spent a Saturday morning at a service centre.

The Five-Year Ledger, Line by Line

Put the cost items side by side and the shape of the decision becomes clear.

The cells are deliberately empty of dollars, because the dollars belong to your situation. Before you decide, fill in four local numbers: your annual kilometres, your electricity tariff and charging options at home, the current incentives in your state or territory, and an insurance quote for both cars. Add a servicing estimate for each from a local workshop. Those six numbers decide the comparison, not the marketing on either side.

Arithmetic, Not Ideology

There is no universal winner, only a winner for your circumstances. If you drive moderate distances, can charge at home and keep cars for years, the electric option usually wins on running costs and wins clearly on servicing. If you buy at the affordable end, tow, cover long regional distances or park on the street with no way to charge, petrol remains the rational choice, and no amount of national average will change that.

The five-year answer is arithmetic, not ideology. Run your own numbers and the decision makes itself.

Sources: Australian Electric Vehicle Council, running cost guidance; Australian Government green vehicle guidance; state and territory electric vehicle incentive programs.