{"id":122037,"date":"2026-06-21T11:00:00","date_gmt":"2026-06-21T10:00:00","guid":{"rendered":"https:\/\/en.econostrum.info\/uk\/?p=122037"},"modified":"2026-06-21T10:14:15","modified_gmt":"2026-06-21T09:14:15","slug":"uk-heatwave-alert-fuel-mistake","status":"publish","type":"post","link":"https:\/\/en.econostrum.info\/uk\/uk-heatwave-alert-fuel-mistake\/","title":{"rendered":"UK Heatwave Alert: The Simple Fuel Mistake That Could Cost Drivers This Week"},"content":{"rendered":"\n<p>From this weekend, motorists across the UK are being advised to consider <strong>refuelling before Tuesday<\/strong> as temperatures rise sharply, with a heatwave expected to push parts of the country above <strong>30C<\/strong> and an amber Met Office warning in place for extreme heat.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">Heatwave Forecast Across The UK<\/h2>\n\n\n\n<p>Temperatures are expected to climb through Monday and peak on <strong>Tuesday,<\/strong> with London forecast to reach around <strong>34C<\/strong>. Much of<strong> England and Wales<\/strong> is likely to remain above <strong>30C<\/strong> for several hours, according to the Met Office.<\/p>\n\n\n\n<p>An amber warning for extreme heat is active from early Monday until the end of <strong>Tuesday<\/strong>. While such alerts are increasingly familiar during summer periods, they remain linked to disruptions in travel patterns, including heavier traffic and slower journey times.<\/p>\n\n\n\n<figure class=\"wp-block-embed is-type-rich is-provider-x wp-block-embed-x\"><div class=\"wp-block-embed__wrapper\">\n<blockquote class=\"twitter-tweet\" data-width=\"550\" data-dnt=\"true\"><p lang=\"en\" dir=\"ltr\">\u26a0\ufe0f\u26a0\ufe0f Amber weather warning UPDATED \u26a0\ufe0f\u26a0\ufe0f<br><br>Extreme heat across parts of England and Wales<br><br>Monday 22 and Tuesday 23 June<br><br>Latest info \ud83d\udc49 <a href=\"https:\/\/t.co\/QwDLMfRBfs\">https:\/\/t.co\/QwDLMfRBfs<\/a><br><br>Stay <a href=\"https:\/\/x.com\/hashtag\/WeatherAware?src=hash&amp;ref_src=twsrc%5Etfw\">#WeatherAware<\/a> \u26a0\ufe0f <a href=\"https:\/\/t.co\/qjNu88R6uB\">pic.twitter.com\/qjNu88R6uB<\/a><\/p>&mdash; Met Office (@metoffice) <a href=\"https:\/\/x.com\/metoffice\/status\/2068293115010502830?ref_src=twsrc%5Etfw\">June 20, 2026<\/a><\/blockquote><script async src=\"https:\/\/platform.x.com\/widgets.js\" charset=\"utf-8\"><\/script>\n<\/div><\/figure>\n\n\n\n<h2 class=\"wp-block-heading\">Why Fuel Use May Increase In Hot Weather<\/h2>\n\n\n\n<p>Fuel consumption can rise during hotter conditions due to changes in driving behaviour and vehicle use.<\/p>\n\n\n\n<p>Air conditioning use is one of the main factors, particularly in slow-moving traffic or during short trips. At lower speeds, some drivers also open windows, which can affect vehicle aerodynamics and overall efficiency.<\/p>\n\n\n\n<p>The <strong>US Department of Energy<\/strong> has previously noted that air conditioning can reduce fuel economy significantly in hot weather, particularly on short journeys where cooling demand is higher relative to distance travelled.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">Fuel Prices And Driver Impact<\/h2>\n\n\n\n<p>Fuel prices in the UK remain elevated. <a href=\"https:\/\/www.rac.co.uk\/drive\/advice\/fuel-watch\/\" target=\"_blank\" rel=\"noopener\">RAC data<\/a> shows petrol averaging around <strong>154.72p per litre<\/strong>, with diesel at approximately <strong>174.30p per litre.<\/strong><\/p>\n\n\n\n<p>At these levels, small changes in consumption can be more noticeable for motorists. Some drivers may also find fuel range estimates less predictable during periods of high heat and heavier congestion, particularly on longer journeys.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">Expert Advice And Safety Concerns<\/h2>\n\n\n\n<p>There is a common belief that filling up a car during hot weather can be unsafe. However, automotive experts have consistently rejected this. RAC spokesperson <strong>Rod Dennis<\/strong> has stated there is no risk of explosion when filling a fuel tank, as modern systems are designed to handle expansion and vapour safely.<\/p>\n\n\n\n<p>The main advice remains focused on planning ahead, particularly when travel conditions are expected to be busier than normal.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">Fuel Economy And Temperature Range<\/h2>\n\n\n\n<p>Fuel efficiency varies depending on temperature conditions. Research suggests that moderate temperatures, around <strong>15C to 20C<\/strong>, are generally more efficient for engine performance. At lower temperatures, engines take longer to reach optimal operating conditions. At <a href=\"https:\/\/en.econostrum.info\/uk\/super-el-nino-forecast-weather\/\" target=\"_blank\" rel=\"noopener\">higher temperatures<\/a>, air conditioning use and traffic conditions can reduce efficiency again.<\/p>\n\n\n\n<p>Fuel analysis groups such as Fuel Finder UK note that very high temperatures, around<strong> 32C<\/strong> and above, may contribute to reduced efficiency and increased strain during longer journeys. For motorists, the coming days may mainly require more attention to fuel levels and journey planning during peak heat hours.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>UK drivers are being urged to refuel before Tuesday as a heatwave pushes temperatures above 30C and an amber weather warning comes into force. Hot weather could affect driving conditions, traffic levels and fuel use, prompting advice to plan journeys and avoid running low on fuel.<\/p>\n","protected":false},"author":6,"featured_media":122038,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[39],"tags":[],"class_list":["post-122037","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-energy","generate-columns","tablet-grid-50","mobile-grid-100","grid-parent","grid-33","no-featured-image-padding"],"_links":{"self":[{"href":"https:\/\/en.econostrum.info\/uk\/wp-json\/wp\/v2\/posts\/122037","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/en.econostrum.info\/uk\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/en.econostrum.info\/uk\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/en.econostrum.info\/uk\/wp-json\/wp\/v2\/users\/6"}],"replies":[{"embeddable":true,"href":"https:\/\/en.econostrum.info\/uk\/wp-json\/wp\/v2\/comments?post=122037"}],"version-history":[{"count":1,"href":"https:\/\/en.econostrum.info\/uk\/wp-json\/wp\/v2\/posts\/122037\/revisions"}],"predecessor-version":[{"id":122039,"href":"https:\/\/en.econostrum.info\/uk\/wp-json\/wp\/v2\/posts\/122037\/revisions\/122039"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/en.econostrum.info\/uk\/wp-json\/wp\/v2\/media\/122038"}],"wp:attachment":[{"href":"https:\/\/en.econostrum.info\/uk\/wp-json\/wp\/v2\/media?parent=122037"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/en.econostrum.info\/uk\/wp-json\/wp\/v2\/categories?post=122037"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/en.econostrum.info\/uk\/wp-json\/wp\/v2\/tags?post=122037"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}