Guides to spend less on every fill
Practical, honest guides on fuel and EV charging: how prices really work, what is worth paying for, and how to pay less every time you drive. No jargon, no fluff.
How fuel prices work
Why does fuel cost what it costs?
Tax, wholesale oil and a thin margin: a clear breakdown of the pump price, and why it moves the way it does.
How much of your fuel price is tax?
Between 30% and 56% across the EU. The official split for all 27 countries, and why untaxed fuel costs almost the same everywhere.
Diesel is no longer the cheap fuel
It now costs more than petrol in 22 of 27 EU countries, most of them since 2024. And the tax break is still there.
Why do nearby stations charge different prices?
Same tax and oil, different price. How competition, location and site costs set each pump, and how to catch the cheaper one.
Is there a cheapest day to fill up?
How fuel prices really move, why the day of the week barely matters, and where the real savings hide.
Why is motorway fuel so expensive?
Same fuel, higher price. Why low competition pushes up the price at service stations, and how to avoid the premium.
Saving on every fill
Is it worth driving further for cheaper fuel?
The simple detour maths: the saving versus the fuel you burn getting there, and when a cheaper station across town pays.
Fuel discount cards: what are they worth?
How to turn any card into a real cents-per-litre number, and the loyalty trap that costs more than it saves.
How to save on fuel
Nine practical habits, from tyre pressure to smoother driving, that add up to real money over a year.
How much can comparing save you in a year?
A few cents a litre, multiplied across a year of fill-ups. A realistic estimate of what comparing prices is really worth.
Which fuel to choose
Petrol 95 or 98: which do you need?
Octane is knock resistance, not power. When 98 genuinely helps, and when it is money left at the till.
Premium diesel: is it worth the extra?
What the additives really do, when premium earns its keep, and when standard diesel is the smarter buy.
LPG (Autogas): does it really save money?
Half price at the pump, but you burn more and the conversion costs. When Autogas genuinely pays off.
Petrol, diesel or electric: what's cheaper?
Cost per 100 km compared fairly. Why an EV can be the cheapest option on the road, or one of the priciest.
Electric: charging and range
What does it cost to charge an EV?
Home vs public, AC vs DC rapid: the real cost per 100 km, and how to keep charging cheap.
AC or DC: what charging speeds mean
Slow AC, fast DC, and a big price gap between them. How to pick the right charging speed for the stop you are making.
Charging an EV with no driveway
No home charger? Lean on cheap AC, keep rapid for journeys, compare networks. How to keep an EV cheap on public charging.
How to charge your EV for less
Simple ways to cut the cost every time you plug in, at home and on the road.
Does cold weather hurt economy and range?
Combustion cars sip a bit more, EVs lose noticeably more range. Why, and how to plan around it.
Put it into practice
Reading helps, but the savings are in the numbers on the day. Fillz compares every fuel station and charging point around you and shows the one that genuinely pays off, detour included.
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