http://localhost:3000/guides/ Plain-English fuel, EV and efficiency guides from RoadCost. en Tue, 27 Oct 2026 00:00:00 GMT http://localhost:3000/guides/uk-vs-us-mpg/ http://localhost:3000/guides/uk-vs-us-mpg/ The imperial and US gallons are not the same. Here is the exact conversion and why the same car can appear more efficient in Britain. Tue, 27 Oct 2026 00:00:00 GMT http://localhost:3000/guides/how-fuel-cost-is-calculated/ http://localhost:3000/guides/how-fuel-cost-is-calculated/ The formulas behind the fuel cost calculator, including UK pence-per-litre pricing, US gallons and European litres per 100 km. Tue, 27 Oct 2026 00:00:00 GMT http://localhost:3000/guides/mpge-explained/ http://localhost:3000/guides/mpge-explained/ How EPA MPGe relates to real electric consumption, and how to compare it without confusing energy with liquid fuel. Tue, 27 Oct 2026 00:00:00 GMT http://localhost:3000/guides/mpg-to-l100km/ http://localhost:3000/guides/mpg-to-l100km/ Convert MPG to L/100 km with the right constant for UK and US gallons, including worked examples and common mistakes. Tue, 27 Oct 2026 00:00:00 GMT http://localhost:3000/guides/l100km-to-mpg/ http://localhost:3000/guides/l100km-to-mpg/ Turn litres per 100 kilometres into UK or US MPG with the exact formulas, examples and a simple way to remember the ratio. Tue, 27 Oct 2026 00:00:00 GMT http://localhost:3000/guides/km-per-litre-to-mpg/ http://localhost:3000/guides/km-per-litre-to-mpg/ Understand kilometres per litre, convert it to MPG UK or US, and see why km/L is the inverse of L/100 km. Tue, 27 Oct 2026 00:00:00 GMT http://localhost:3000/guides/us-vs-imperial-gallon/ http://localhost:3000/guides/us-vs-imperial-gallon/ The US and imperial gallons are different volumes. Learn the exact difference and how it changes MPG, fuel prices and cost comparisons. Tue, 27 Oct 2026 00:00:00 GMT http://localhost:3000/guides/fuel-economy-vs-consumption/ http://localhost:3000/guides/fuel-economy-vs-consumption/ MPG and km/L measure distance per fuel. L/100 km measures fuel per distance. Here is why the distinction matters for comparisons and costs. Tue, 27 Oct 2026 00:00:00 GMT http://localhost:3000/guides/cost-per-mile-formula/ http://localhost:3000/guides/cost-per-mile-formula/ Calculate fuel cost per mile correctly for UK and US units, with examples and the mistake that makes estimates too low. Tue, 27 Oct 2026 00:00:00 GMT http://localhost:3000/guides/round-trip-fuel-cost/ http://localhost:3000/guides/round-trip-fuel-cost/ A simple method for round-trip fuel estimates, including detours, unit changes and the difference between one-way and return distance. Tue, 27 Oct 2026 00:00:00 GMT http://localhost:3000/guides/fuel-cost-100-miles/ http://localhost:3000/guides/fuel-cost-100-miles/ Work out fuel use and fuel cost for 100 miles in UK or US units, with example tables and the formula behind the answer. Tue, 27 Oct 2026 00:00:00 GMT http://localhost:3000/guides/fuel-cost-100-km/ http://localhost:3000/guides/fuel-cost-100-km/ Calculate litres and fuel cost for 100 kilometres using L/100 km or km/L, with examples for Europe and Asia-Pacific markets. Tue, 27 Oct 2026 00:00:00 GMT http://localhost:3000/guides/commute-fuel-cost/ http://localhost:3000/guides/commute-fuel-cost/ A practical method for turning your daily commute into a fuel budget, including round trips, working weeks and real-world consumption. Tue, 27 Oct 2026 00:00:00 GMT http://localhost:3000/guides/road-trip-fuel-budget/ http://localhost:3000/guides/road-trip-fuel-budget/ Estimate road-trip fuel cost, add a sensible buffer and handle unit changes across countries without guessing. Tue, 27 Oct 2026 00:00:00 GMT http://localhost:3000/guides/track-real-fuel-economy/ http://localhost:3000/guides/track-real-fuel-economy/ Measure your car's real MPG or L/100 km using odometer readings and fill-ups, and avoid the common errors that distort the result. Tue, 27 Oct 2026 00:00:00 GMT http://localhost:3000/guides/ac-fuel-economy/ http://localhost:3000/guides/ac-fuel-economy/ How car air conditioning affects fuel use, why speed changes the answer, and when open windows are the better choice. Tue, 27 Oct 2026 00:00:00 GMT http://localhost:3000/guides/roof-box-fuel-economy/ http://localhost:3000/guides/roof-box-fuel-economy/ Why roof accessories add drag, how speed makes the effect worse, and how to measure the real cost on your own car. Tue, 27 Oct 2026 00:00:00 GMT http://localhost:3000/guides/tyre-pressure-fuel-economy/ http://localhost:3000/guides/tyre-pressure-fuel-economy/ How under-inflated tyres affect rolling resistance, how to check pressure correctly, and why over-inflating is not a free fix. Tue, 27 Oct 2026 00:00:00 GMT http://localhost:3000/guides/idling-fuel-use/ http://localhost:3000/guides/idling-fuel-use/ Why idling is inefficient, when switching off makes sense, and how idling affects a simple fuel-cost estimate. Tue, 27 Oct 2026 00:00:00 GMT http://localhost:3000/guides/best-speed-fuel-economy/ http://localhost:3000/guides/best-speed-fuel-economy/ Why there is no universal magic speed, how aerodynamic drag changes the picture, and how to find an efficient pace for your car. Tue, 27 Oct 2026 00:00:00 GMT http://localhost:3000/guides/towing-fuel-economy/ http://localhost:3000/guides/towing-fuel-economy/ Understand how trailers affect fuel use, why drag matters, and how to budget for a towing trip with a realistic MPG. Tue, 27 Oct 2026 00:00:00 GMT http://localhost:3000/guides/city-vs-highway-mpg/ http://localhost:3000/guides/city-vs-highway-mpg/ Compare city and highway fuel use for petrol cars, hybrids and EVs, and choose the right figure for your route. Tue, 27 Oct 2026 00:00:00 GMT http://localhost:3000/guides/kwh-per-100km/ http://localhost:3000/guides/kwh-per-100km/ Learn what kWh/100 km means, how to turn it into cost per 100 km, and how it differs from mi/kWh and battery-side efficiency. Tue, 27 Oct 2026 00:00:00 GMT http://localhost:3000/guides/mi-per-kwh-vs-km-per-kwh/ http://localhost:3000/guides/mi-per-kwh-vs-km-per-kwh/ Convert miles per kWh to kilometres per kWh and kWh/100 km, and understand which direction means better efficiency. Tue, 27 Oct 2026 00:00:00 GMT http://localhost:3000/guides/ev-charging-losses/ http://localhost:3000/guides/ev-charging-losses/ Why the electricity you pay for is not all stored in the battery, the charging-loss formula, and how to avoid double counting. Tue, 27 Oct 2026 00:00:00 GMT http://localhost:3000/guides/home-vs-public-charging/ http://localhost:3000/guides/home-vs-public-charging/ Compare home and public charging on all-in cost per kWh, including session fees, charging losses and convenience. Tue, 27 Oct 2026 00:00:00 GMT http://localhost:3000/guides/ev-vs-petrol-break-even/ http://localhost:3000/guides/ev-vs-petrol-break-even/ Estimate the annual running-cost saving from an EV and the years needed to recover a purchase-price difference. Tue, 27 Oct 2026 00:00:00 GMT http://localhost:3000/guides/ev-range-cold-weather/ http://localhost:3000/guides/ev-range-cold-weather/ How cabin heating and battery temperature affect EV range, and how to build a realistic winter estimate. Tue, 27 Oct 2026 00:00:00 GMT http://localhost:3000/guides/hybrid-vs-petrol-cost/ http://localhost:3000/guides/hybrid-vs-petrol-cost/ Compare hybrid and petrol fuel costs using the same annual distance, realistic MPG and your own fuel price. Tue, 27 Oct 2026 00:00:00 GMT