With the RAC warning of “increasingly bleak” fuel price forecasts and duty rises on the horizon, here’s everything UK drivers need to know to slash their bills at the pump — whatever fuel type you drive.
If you filled up this morning, you’ll already have noticed the damage. Since a new conflict in the Middle East erupted on 28 February 2026, petrol prices have risen to around 137.5p per litre, while diesel has climbed to 151p per litre. Electric vehicle drivers aren’t immune either — domestic energy tariffs and public charging costs have both risen sharply over the same period.
And the forecasts are not encouraging. RAC head of policy Simon Williams has warned that the situation for UK drivers is “increasingly bleak,” with pump prices likely to climb further — rising more quickly now than at any point since the start of the Ukraine conflict. If oil holds at a sustained $100 a barrel, diesel could reach almost 180p — a three-year high — with petrol not far behind.
On top of that, the Government has confirmed that the 5p fuel duty cut introduced during the 2022 energy crisis will begin to be unwound from September 2026, adding approximately £2.75 to the cost of filling a 55-litre tank by March 2027.
In short, fuel costs are heading in one direction for everyone. But there is genuinely good news: the way you drive has an enormous bearing on how much energy your car consumes — and most drivers have far more room for improvement than they realise. Adopt the right habits and you can cut your consumption by 10–20% without spending a penny.
Here’s how.
Why Fuel Efficiency Matters More Than Ever in 2026
Whether you drive a petrol hatchback, a diesel estate, a hybrid, or a plug-in electric vehicle, the principle is the same: every unnecessary joule of energy wasted is money you don’t need to spend. With pump prices volatile and household budgets stretched, efficient driving has moved from a nice-to-have into a genuine financial skill.
The techniques below apply to all fuel types. Some specifics differ between combustion and electric vehicles — we’ll flag those where relevant — but the underlying logic is consistent: reduce resistance, reduce waste, reduce cost.
1. Master Smooth, Anticipatory Driving
The single biggest drain on fuel — for petrol, diesel, and hybrid drivers alike — is unnecessary acceleration followed by unnecessary braking. Every time you accelerate hard and then brake, you are converting expensive fuel (or stored battery charge) into wasted heat.
The fix is anticipation. Look well ahead, read the road, and plan your approach to junctions, roundabouts, and traffic lights early. Lift off the throttle and allow the car to coast (or regeneratively brake, if you’re in an EV or hybrid) rather than carrying speed to the last moment and then braking sharply.
This technique is sometimes called hypermiling — the practice of maximising miles per unit of fuel or charge through driving behaviour alone. Serious hypermilers have achieved extraordinary results, but even a modest application of the principles will deliver real savings for an ordinary commuter.
Practical tips:
- Aim to read the road 10–15 seconds ahead rather than just watching the car in front.
- On the approach to a red light or queue, come off the accelerator early and let momentum do the work.
- On a motorway or dual carriageway, maintain a larger following distance — this gives you time to adjust speed smoothly rather than reacting sharply.
- Avoid “jack rabbit” starts from junctions. Accelerate gently and progressively.
For EV drivers, smooth driving maximises the benefit of regenerative braking, which recovers energy back into the battery. Aggressive driving wastes that opportunity entirely.
2. Use the Right Gear at the Right Time
For petrol and diesel drivers, gear choice is one of the most immediate levers you have. Engines are most fuel-efficient when they’re working in a lower rev range — roughly 1,500–2,000 rpm for diesel and 1,500–2,500 rpm for petrol. Sitting in a lower gear and revving hard burns significantly more fuel than pulling a higher gear at lower revs.
The DVSA and many advanced driving organisations recommend block gear changing — skipping intermediate gears when conditions allow — to get into the highest appropriate gear as quickly as possible. If you’re in third and the road ahead is clear, move straight to fifth rather than working through fourth unnecessarily.
Engine braking is the complementary technique. Rather than coasting in neutral on the approach to a hazard, keep the car in gear and lift off the throttle. On a modern fuel-injected engine, this cuts fuel delivery almost entirely — the engine is braked by compression alone, with minimal fuel used. Coasting in neutral, by contrast, requires the engine to idle and burn fuel to keep itself running.
Practical tips:
- Change up early and keep revs low.
- Use block gear changes where traffic conditions allow.
- Use engine braking on descents and approaches rather than neutral coasting.
- Avoid holding a low gear on a long descent just to “feel” in control — a higher gear with engine braking is both safer and more efficient.
If you drive an automatic, most modern boxes have an “Economy” or “Eco” mode — use it. It adjusts shift points and throttle response to prioritise efficiency.
3. Check Your Tyre Pressure Regularly
Tyre pressure is one of the most overlooked fuel efficiency factors, and it costs nothing to check. Under-inflated tyres increase rolling resistance — the car has to work harder to move forward, burning more fuel in the process. According to the AA, tyres that are just 8 psi under-inflated can increase fuel consumption by around 5%.
For EVs, tyre pressure is equally important. Rolling resistance directly affects range, and a significant drop in tyre pressure can meaningfully shorten how far you can travel on a single charge.
Practical tips:
- Check tyre pressures at least once a month and before any long journey.
- Use the pressures specified in your vehicle handbook or door jamb placard — not the maximum figure printed on the tyre sidewall.
- Adjust pressures when tyres are cold (before driving or after less than a couple of miles).
- Consider whether your vehicle is approved for a slightly higher pressure when carrying a full load — many manufacturers publish a laden pressure that improves efficiency when the car is heavily loaded.
Some drivers opt for tyres with a low rolling resistance rating — look for the EU tyre label and aim for a B or A rating in the rolling resistance category when it’s time to replace.
4. Reduce Unnecessary Weight and Drag
Your car uses energy proportional to what it’s moving. Carrying unnecessary weight — roof boxes, golf clubs permanently in the boot, a full tank of fuel when half will do — all adds to the load the engine must move.
Similarly, aerodynamic drag increases exponentially with speed. A roof rack or roof box, even an empty one, creates significant drag at motorway speeds. Remove accessories when they’re not needed.
Practical tips:
- Remove roof racks, bike carriers, and roof boxes when not in use.
- Clear unnecessary items from the boot.
- For petrol and diesel drivers, filling up to half a tank rather than brimming it reduces the weight of fuel carried — sensible if you pass a filling station regularly.
- Keep windows closed at motorway speeds; the aerodynamic penalty of open windows outweighs the cost of running air conditioning at a modest setting.
5. Use Air Conditioning Sensibly
Air conditioning is driven by the engine (or the battery in an EV) and can increase fuel consumption by 5–10% in urban driving. That doesn’t mean you should never use it — overheating makes driving dangerous — but there are ways to use it more efficiently.
Practical tips:
- At speeds below 40–45 mph, opening the windows is generally more efficient than running the air conditioning.
- At motorway speeds, air conditioning is typically more efficient than open windows due to the aerodynamic drag penalty.
- Use the re-circulation mode once the car has cooled down — it’s far easier to cool already-cool air than to constantly cool fresh warm air from outside.
- Don’t pre-cool the car with the engine off if you drive a petrol or diesel vehicle — it draws power from the battery without generating charge, adding load on the alternator when you pull away.
- For EV drivers: pre-conditioning the cabin while still plugged in to the charger is a great habit — you use grid electricity rather than battery range to reach a comfortable temperature before setting off.
6. Plan Your Journeys and Cut Unnecessary Cold Starts
A cold engine is an inefficient engine. Petrol and diesel engines use significantly more fuel in the first few miles after a cold start, before the engine oil has reached operating temperature and the engine management system has moved out of its cold-running enrichment mode.
This means that multiple short trips — each one starting from cold — are disproportionately expensive compared to a single longer journey covering the same total distance.
Practical tips:
- Combine errands into a single trip rather than making several short journeys throughout the day.
- Use a journey planner to avoid congested routes — stop-start traffic in heavy congestion can increase urban fuel consumption dramatically.
- If you can walk or cycle for very short journeys, doing so avoids the cold-start penalty entirely.
- For EV drivers, cold weather affects battery chemistry and range. Pre-conditioning (as above) and keeping the battery between 20% and 80% charge in very cold weather will help preserve usable range.
7. Keep On Top of Basic Maintenance
A poorly maintained engine burns more fuel. Worn spark plugs, dirty air filters, degraded engine oil, and a clogged fuel injector all force the engine to work harder than it should.
Practical tips:
- Stick to your manufacturer’s service schedule.
- Use the correct grade of engine oil — modern engines are often specified for low-viscosity oil that reduces internal friction. Using a thicker oil than recommended costs you efficiency.
- If your car has flagged a warning light — particularly around the engine management system — get it investigated promptly. A faulty oxygen sensor, for instance, can cause the engine to run rich and consume significantly more fuel.
- For EVs, keep software up to date — manufacturers frequently push over-the-air updates that optimise battery management and efficiency.
How Much Can You Actually Save?
Put these habits together and the savings are real. A driver covering 12,000 miles a year in an average family diesel — currently paying around 151p per litre — could be spending over £2,000 a year on fuel. A consistent 15% reduction in consumption through the techniques above saves £300 or more annually. At 160p or 180p per litre, those savings grow further.
For petrol drivers the maths is similar. For EV drivers, while the unit cost of electricity is lower, maximising range through efficient driving directly reduces how often you need to charge — on a public rapid charger, that can still translate into meaningful savings.
Finding the Cheapest Fuel Near You
Even after you’ve optimised your driving style, buying fuel at the right price matters. In the UK, the best free tools for finding cheap local fuel are:
- PetrolPrices.com — search by postcode for the cheapest petrol and diesel in your area
- Zap-Map — the go-to resource for EV drivers finding charge point locations and pricing
- Supermarket fuel stations — Tesco, Asda, Morrisons, and Sainsbury’s consistently price competitively and frequently offer loyalty card discounts
Avoid motorway services where possible — prices are routinely 10–15p per litre above the local average.
The Bottom Line
Rising pump prices are largely outside your control. The way you drive is not. With diesel threatening 160p and petrol not far behind, the techniques in this guide — smooth anticipatory driving, correct gear use, maintained tyre pressures, reduced weight and drag, and sensible maintenance — give every UK driver a straightforward path to spending noticeably less at the pump in 2026.
Start with tyre pressures today. The check takes two minutes and could save you £50–£100 over the course of a year before you’ve changed a single driving habit.
Smooth acceleration and sensible gear choice also matter when learning to drive. Find practical tips in my clutch control and gear changes guide.
