{"id":35190,"date":"2025-03-04T10:01:00","date_gmt":"2025-03-04T09:01:00","guid":{"rendered":"https:\/\/www.sustainable-bus.com\/?p=35190"},"modified":"2025-03-04T12:00:36","modified_gmt":"2025-03-04T11:00:36","slug":"hydrogen-buses-poznan-withdrawn-diagnostics","status":"publish","type":"post","link":"https:\/\/www.sustainable-bus.com\/news\/hydrogen-buses-poznan-withdrawn-diagnostics\/","title":{"rendered":"Hydrogen buses in Pozna\u0144 have been temporarily withdrawn due to diagnostic faults"},"content":{"rendered":"\n<p>14 hydrogen buses operated by <strong>MPK Pozna\u0144<\/strong>, in Poland, have been temporarily <strong>withdrawn from service and returned to the depot<\/strong>. The decision was made on an <strong>emergency<\/strong> basis after onboard diagnostic systems detected unexpected faults in the vehicles, as reported on <a href=\"https:\/\/transinfo.pl\/infobus\/wszystkie-poznanskie-autobusy-wodorowe-solarisa-wycofane-z-ruchu-komunikat-mpk\/\">Polish trade media Transinfo.pl<\/a>. The same operator MPK announced the decision on social media. Causes are under investigation, Solaris shared the more likely reason being <strong>poor fuel\/hydrogen quality<\/strong>.<\/p>\n\n\n\n<iframe loading=\"lazy\" src=\"https:\/\/www.facebook.com\/plugins\/post.php?href=https%3A%2F%2Fwww.facebook.com%2Fmpkpoznan%2Fposts%2Fpfbid02zpP3GkLVCxyQFBuwympSAfDWuQmyLmiBkazZMSobrLSJDREYS2TxCnJ7gGJXjnQwl&#038;show_text=true&#038;width=500\" width=\"500\" height=\"559\" style=\"border:none;overflow:hidden\" scrolling=\"no\" frameborder=\"0\" allowfullscreen=\"true\" allow=\"autoplay; clipboard-write; encrypted-media; picture-in-picture; web-share\"><\/iframe>\n\n\n\n<p><strong>378&nbsp;<\/strong><a href=\"https:\/\/www.sustainable-bus.com\/fuel-cell-bus\/fuel-cell-bus-hydrogen\/\">fuel cell buses<\/a>&nbsp;were <a href=\"https:\/\/www.sustainable-bus.com\/fuel-cell-bus\/hydrogen-bus-market-europe-2024\/\">registered all around Europe in 2024<\/a>, growing&nbsp;<strong>+82% on 2023<\/strong>. with Solaris achieving a 65% market share.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">34 fuel cell buses will be in Poznan&#8217;s fleet<\/h2>\n\n\n\n<p>The affected fleet consists of 14 (out of 25) Solaris Urbino 12 Hydrogen buses, <a href=\"http:\/\/v\">ordered in 2022<\/a> as part of a pilot project aimed at reducing emissions in Pozna\u0144. And a further <a href=\"https:\/\/www.sustainable-bus.com\/fuel-cell-bus\/mpk-poznan-solaris-order-hydrogen-buses\/\">order for another 9-units batch was formalized in February 2025<\/a>. These 12-metre low-floor buses are equipped with a 70 kW hydrogen fuel cell and a 37.5 kg hydrogen storage tank, providing a maximum range of up to 350 km per refuelling. In&nbsp;January, MPK had also&nbsp;<a href=\"https:\/\/www.sustainable-bus.com\/news\/poznan-solaris-electric-buses\/\">ordered 17 articulated electric buses from Solaris<\/a>.<\/p>\n\n\n\n<p>The operator wrote on social media on 3rd March: &#8220;We would like to inform you that we were forced to bring back to the depot all hydrogen-powered Solaris Urbino 12 Hydrogen buses, in which the <strong>on-board computers signalled a breakdown today in the afternoon hours<\/strong>. Due to the priority of line services, all the withdrawn units were immediately replaced with the remaining available rolling stock. <strong>We are currently working together with the bus manufacturer and the hydrogen fuel supplier <\/strong>to clarify the cause and resolve the problems, which we will keep you informed of.&#8221;<\/p>\n\n\n\n<p>Asked about the episode, Solaris states that &#8220;the most likely cause of the malfunctions in several hydrogen buses in Pozna\u0144 is <strong>poor fuel\/hydrogen quality<\/strong>. This is currently being clarified and checked in independent laboratories examining hydrogen samples from the station that supplies the buses in Pozna\u0144&#8221;.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>14 hydrogen buses operated by MPK Pozna\u0144, in Poland, have been temporarily withdrawn from service and returned to the depot. The decision was made on an emergency basis after onboard diagnostic systems detected unexpected faults in the vehicles, as reported on Polish trade media Transinfo.pl. The same operator MPK announced the decision on social media. [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":35192,"comment_status":"open","ping_status":"open","sticky":true,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[337,1],"tags":[1084],"acf":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v22.8 - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>Hydrogen buses in Pozna\u0144 have been temporarily withdrawn due to diagnostic faults - Sustainable Bus<\/title>\n<meta name=\"description\" content=\"All hydrogen buses operated by MPK Pozna\u0144, il Poland, have been temporarily withdrawn from service and returned to depot.\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/www.sustainable-bus.com\/news\/hydrogen-buses-poznan-withdrawn-diagnostics\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Hydrogen buses in Pozna\u0144 have been temporarily withdrawn due to diagnostic faults - 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