Fuel-saving hacks that work vs those that don't

03 February 2023 - 14:42 By Motoring Staff
subscribe Just R20 for the first month. Support independent journalism by subscribing to our digital news package.
Subscribe now
With rising fuel prices motorists will try almost anything to squeeze the most mileage from their tanks.
With rising fuel prices motorists will try almost anything to squeeze the most mileage from their tanks.
Image: Supplied

February might be the month of love, but this year it's proving to be one of anger and frustration for South Africa's already cash-strapped motorists as petrol and diesel prices spiral.

The first fuel price increase of the year took the price of 93 octane petrol up to R21.38/l inland and 95 octane to R21.68/l. The wholesale price of diesel rose to R21.32/l.

Desperate to make their tanks go as far as possible, many motorists are turning to so-called miracle products that promise to deliver dramatic results. In reality, however, they don't do anything to improve your car's efficiency and can damage your engine. 

Here's a look at fuel hacks worth avoiding and those worth trying.

Fuel pills

MasterDrive CEO Eugene Herbert says two problematic ingredients, naphthalene and ferrocene, were found in fuel pills that not only make them ineffective but potentially damaging to your vehicle.

“If a fuel pill contains either ingredient there is little to no benefit and can cause greater fuel consumption. If you do not know what it contains you are being taken advantage of and, worse, adding potentially harmful substances to your vehicle.

“Numerous tests conducted on fuel-saving devices such as ‘fuel pills’ show they do not save enough fuel to be measurable. In South Africa, companies such as Sasol call them a scam and the Western Cape government warns against their use.”

Unfortunately, attempts to save fuel are not limited to fuel pills.

“It cannot be over-emphasised that the only thing intended to go into your fuel tank is fuel. Another gimmick some have tried is using Coca-Cola instead of fuel. A company associated with a viral video distanced itself because Coca-Cola is definitely not a safe substitute for fuel. It will cost much more than potential improbable savings.”

Fuel pills are not only ineffective but potentially damaging to your vehicle.
Fuel pills are not only ineffective but potentially damaging to your vehicle.
Image: Supplied

Other hard-to-believe “hacks”:

  • ketchup/tomato sauce
  • plug-in devices
  • dishwasher tablets
  • toothpaste
  • buying fuel early in the morning
  • overinflating tyres

Be cautious of techniques employed to save fuel, especially if it involves putting foreign substances into fuel tanks.

“It is not true that if it doesn’t work ‘no harm, no foul’. It can cause plenty of harm which is not worth the supposed savings. Research proves it can only cause harm to your vehicle. Ultimately, if it sounds too good to be true, it probably is,” says Herbert.

The real hacks

Luckily, there are proven techniques.

“These may not be what you are expecting. Techniques such as defensive driving, not speeding, anticipating traffic conditions, avoiding reckless driving and planning routes are the best way to get results. Introducing these ‘hacks’ can potentially reduce fuel consumption by up to 20%,” says Herbert.

Other “real hacks” include:

  • watching 12 seconds ahead as you drive
  • reducing speed by 20km/h
  • use traffic apps and alerts to avoid congestion
  • keeping engine speed to around 3,000rpm
  • regular maintenance
  • remove unnecessary items from your car

Support independent journalism by subscribing to the Sunday Times. Just R20 for the first month.


subscribe Just R20 for the first month. Support independent journalism by subscribing to our digital news package.
Subscribe now

Would you like to comment on this article?
Sign up (it's quick and free) or sign in now.

Speech Bubbles

Please read our Comment Policy before commenting.