With record petrol prices looming, do the sums favour a hybrid?

Higher petrol prices make an already expensive car purchase harder to get right. Buyers trying to keep their monthly costs manageable have to weigh the repayment against what they will spend driving the car, and a more economical petrol engine is only one of the options. Where a hybrid or plug-in hybrid is available for similar money, the choice becomes as much about running costs as it is about the car itself.

October could make that decision more pressing. Early Central Energy Fund data reported by BusinessTech points to potential petrol increases of R1.81 to R1.93 a litre. If those conditions persist, South Africa could face its highest petrol prices on record, exceeding June’s peak. The figures are provisional, with the rest of September’s oil-price and exchange-rate movements still to be reflected in the final adjustment.

A record price is worrying enough for the next fill-up. Someone buying a car has to think about fuel bills over the next four or five years, without knowing where petrol will trade during that time. A vehicle that uses less fuel leaves the owner less exposed to each increase.

The extra cost of buying a hybrid has often meant waiting years for fuel savings to make up the difference. That remains a concern where the premium is substantial. But some hybrids now cost roughly the same as their petrol equivalents, while a buyer comparing different brands may find a plug-in hybrid within the budget they had already set.

Lexus offers a particularly clear example. Its NX 350 F Sport is listed at R1,276,500 and the NX 350h F Sport at R1,277,500. The petrol model offers more power, but the hybrid’s claimed combined consumption is 5.0 L/100 km against 8.1 L/100 km. A buyer choosing the hybrid pays only R1,000 more upfront.

Over 1,500 km a month, those claimed figures imply a difference of 46.5 litres. At an illustrative R25 a litre, that amounts to approximately R1,163 a month in fuel savings. Each further R1 increase in petrol would widen the monthly saving by R46.50, assuming mileage and consumption remained unchanged.

A R1.93 increase would add about R90 a month to that advantage. It would improve the saving, but would hardly justify spending substantially more on a car by itself. The Lexus hybrid makes a strong financial case because there is so little extra to pay in the first place. These calculations use manufacturer consumption claims rather than measured results, and exclude other ownership costs.

Buyers spending less have options too. The Omoda C7 SHS costs R689,900, while Mini lists the petrol Countryman C at R746,906. The cars differ in size, character and positioning, but someone considering the premium petrol crossover could buy the plug-in hybrid SUV without increasing their budget.

The C7 SHS has a claimed electric range of up to 105 km. An owner travelling 50 km a day, with charging available overnight, could potentially cover much of the working week’s driving on electricity. Actual range depends on conditions and use, but those repeated journeys between home, work and the shops offer regular opportunities to leave petrol in the tank.

A conventional hybrid still gets its energy from petrol, although it uses less of it. An owner who regularly charges a plug-in hybrid pays for some of that driving through the electricity bill instead. If the charging tariff stays the same while petrol rises, the electric kilometres become cheaper relative to petrol driving. The saving still has to account for electricity consumption and charging losses.

For someone who can plug in where the car spends the night, charging can become an ordinary part of coming home. An owner without that facility may have to make separate trips to charge or use petrol more often. Two people driving the same model can consequently have quite different fuel bills, depending on how far they travel between charges.

The longer journeys also deserve some perspective. A family may need a car for a holiday across the country, while spending most of the year driving between home, work and school. A plug-in hybrid retains petrol power beyond its available electric range. It can accommodate that holiday without requiring every weekday commute to be powered by petrol.

For households without convenient charging, a conventional hybrid is easier to fit into daily life. Some plug-in hybrids, including the C7 SHS, include a home wall box in the purchase price, though buyers still need somewhere suitable to have it installed. The savings depend on how regularly they charge and how much of their driving can be covered on electricity.

Insurance, depreciation, maintenance cover and any charging installation also affect the bill. A lightly used petrol car bought for substantially less may remain cheaper to own. Replacing a serviceable, paid-off car introduces costs that a lower fuel bill may never recover.

Hybrids and plug-in hybrids are most financially compelling for buyers who need a replacement car and can choose one without spending substantially more. A conventional hybrid offers the prospect of lower consumption with little change to the owner’s routine. A plug-in hybrid can reduce petrol use further where regular charging covers much of the weekly mileage, while keeping longer journeys practical.

October’s final adjustment may be smaller than the early forecast suggests, but the commute and school run will continue regardless. For a household whose car budget already accommodates a suitable hybrid or plug-in hybrid, spending less on those unavoidable journeys is a sound reason to put one on the shortlist.