{"id":175588,"date":"2025-11-02T12:00:00","date_gmt":"2025-11-02T09:00:00","guid":{"rendered":"https:\/\/bukvaved.top\/v-chjom-raznica-mezhdu-benzinom-i-dizelnym-toplivom\/"},"modified":"2026-10-28T13:45:15","modified_gmt":"2026-10-28T10:45:15","slug":"what-is-the-difference-between-gasoline-and-diesel-fuel","status":"publish","type":"post","link":"https:\/\/bukvaved.top\/en\/v-chjom-raznica-mezhdu-benzinom-i-dizelnym-toplivom\/","title":{"rendered":"What is the difference between gasoline and diesel fuel?"},"content":{"rendered":"<p><strong>Gasoline differs from diesel fuel (diesel oil) primarily in the way it is ignited in the engine: the gasoline mixture is ignited by a spark plug, whereas diesel fuel spontaneously ignites in the injected, highly compressed and heated air.<\/strong> This difference leads to other differences\u2014different fuel properties, engine designs, combustion processes, exhaust emissions, and operating costs. We&#039;ll also explain when it&#039;s better to choose a car with a gasoline engine versus a diesel one.<\/p>\n<p> To sum it up<\/p>\n<ul>\n<li> <strong>Ignition:<\/strong> gasoline engine \u2013 spark (spark plugs), diesel engine \u2013 ignition from air compression (diesel engine).<\/li>\n<li> <strong>Fuel:<\/strong> gasoline is lighter and more volatile, its quality is described <strong>octane number<\/strong> ; diesel fuel is heavier and more oily, its quality is described <strong>cetane number<\/strong> .<\/li>\n<li> <strong>Operation:<\/strong> Diesel fuel generally uses less fuel and is good for long trips; gasoline is better for short trips around town.<\/li>\n<li> <strong>Exhaust gases:<\/strong> Modern diesel engines require careful treatment of exhaust gases (diesel particulate filter, often SCR system with AdBlue), which is undesirable when driving short distances.<\/li>\n<\/ul>\n<h2> Gasoline and diesel fuel - the differences are in the fuel itself.<\/h2>\n<p> Both types of fuel are produced from crude oil, but from different fractions. <strong>Petrol<\/strong> It is lighter, more volatile and evaporates easily, which is why its smell can be felt at the gas station. <strong>Diesel fuel<\/strong> (commonly referred to as &quot;petroleum&quot; or &quot;diesel fuel&quot;) is heavier, thicker, and oilier to the touch. According to the European standard EN 590, the density of diesel fuel at 15\u00b0C is in the range of 820\u2013845 kg\/m\u00b3.<\/p>\n<p> Each type of fuel has its own quality parameters, since each of them is intended to perform different tasks:<\/p>\n<ul>\n<li> <strong>Octane number (gasoline)<\/strong> indicates the fuel&#039;s resistance to detonation, or uncontrolled spontaneous combustion. Gasoline <em>shouldn&#039;t<\/em> ignite on its own - hence the designations 95 and 98 at petrol stations.<\/li>\n<li> <strong>Cetane number (diesel fuel)<\/strong> indicates the fuel&#039;s ability to ignite spontaneously. Diesel fuel <em>intended<\/em> for spontaneous and rapid ignition \u2013 EN 590 standard requires a cetane number of at least 51.<\/li>\n<\/ul>\n<p> Both standards allow the addition of bio-components: gasoline according to standard EN 228 can contain bioethanol, and diesel fuel according to standard EN 590 can contain up to 7% fatty acid methyl esters (FAME).<\/p>\n<h2> Petrol and diesel engines \u2013 how do they work?<\/h2>\n<p> \u0412 <strong>gasoline engine (spark-ignition)<\/strong> The fuel-air mixture is compressed in the cylinder and then ignited by a spark from <strong>spark plugs<\/strong> . The power is mainly regulated by the amount of mixture supplied.<\/p>\n<p> \u0412 <strong>diesel engine<\/strong> (Compression ignition, or &quot;high pressure&quot;) is where only the air is compressed. At high compression, its temperature rises so much that the injected diesel fuel ignites without a spark. Therefore, a diesel engine does not have spark plugs\u2014it uses spark plugs instead. <strong>glow plugs<\/strong> , which help with cold starting.<\/p>\n<p> Because a diesel engine operates at significantly higher compression ratios and pressures, its design must be more robust. In exchange, it typically provides <strong>high torque at low revs<\/strong> and improved fuel efficiency, especially at constant revs.<\/p>\n<h2> Comparison Chart: Gasoline vs. Diesel Fuel<\/h2>\n<table>\n<tbody>\n<thead>\n<tr>\n<th> Characteristic<\/th>\n<th> Gasoline engine<\/th>\n<th> diesel fuel<\/th>\n<\/tr>\n<\/thead>\n<\/tbody>\n<tbody>\n<tr>\n<td> <strong>Ignition type<\/strong><\/td>\n<td> Spark plugs<\/td>\n<td> Self-acting \u2013 compressed hot air<\/td>\n<\/tr>\n<tr>\n<td> <strong>Fuel quality parameter<\/strong><\/td>\n<td> Octane number (e.g. 95, 98)<\/td>\n<td> Cetane number (min. 51 according to EN 590)<\/td>\n<\/tr>\n<tr>\n<td> <strong>Fuel properties<\/strong><\/td>\n<td> Lighter, more volatile<\/td>\n<td> Thicker, more oily<\/td>\n<\/tr>\n<tr>\n<td> <strong>Job characteristics<\/strong><\/td>\n<td> It readily revs up, but at the same time operates more quietly.<\/td>\n<td> High torque, low noise<\/td>\n<\/tr>\n<tr>\n<td> <strong>Fuel consumption<\/strong><\/td>\n<td> Usually higher<\/td>\n<td> Usually lower, especially on the road.<\/td>\n<\/tr>\n<tr>\n<td> <strong>Exhaust gas cleaning<\/strong><\/td>\n<td> Catalytic converter, newer direct injection vehicles often use a diesel particulate filter (GPF).<\/td>\n<td> Catalytic converter, diesel particulate filter (DPF), often SCR system with AdBlue, EGR valve.<\/td>\n<\/tr>\n<tr>\n<td> <strong>Short-distance trips<\/strong><\/td>\n<td> He takes it calmly.<\/td>\n<td> Unfavorable result (problem with diesel particulate filter regeneration).<\/td>\n<\/tr>\n<tr>\n<td> <strong>Liquefied gas installation<\/strong><\/td>\n<td> Popular and relatively simple<\/td>\n<td> Rarely used<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<h2> Exhaust gases and the environment<\/h2>\n<p> Diesel engines generally emit less carbon dioxide per kilometer because they burn less fuel. However, their weaknesses are <strong>nitrogen oxides (NOx) and particulate matter (soot)<\/strong> . Therefore, modern diesel engines are equipped with particulate matter <strong>filter (DPF<\/strong> ), which periodically burns off accumulated soot (regeneration), and many also have a system <strong>SCR<\/strong> , which is supplemented with AdBlue, a liquid that reduces nitrogen oxide emissions.<\/p>\n<p> Regeneration of the diesel particulate filter (DPF) requires extended driving with a warm engine. Even short trips can lead to filter clogging and costly repairs. Many cities are also creating <strong>clean transport zones<\/strong> with entry regulations based on factors such as fuel type and exhaust emission standards \u2013 it&#039;s worth checking these before buying a car.<\/p>\n<h2> Diesel fuel or gasoline \u2013 which to choose?<\/h2>\n<ul>\n<li> <strong>If you mostly drive around the city, then for short trips<\/strong> A gasoline engine (either a hybrid or a gasoline engine with LPG) is usually a smarter choice. You&#039;ll avoid problems with the diesel particulate filter and warm up the engine faster.<\/li>\n<li> <strong>You travel a lot, often on the road<\/strong> , so a diesel engine will generally reward you with lower fuel consumption and greater flexibility at low revs.<\/li>\n<li> <strong>Whether you&#039;re towing a trailer or hauling a heavy load,<\/strong> , the high torque of the diesel engine is a clear advantage.<\/li>\n<li> <strong>When buying a used car<\/strong> , especially diesel, pay attention to the condition of the injectors, turbocharger, particulate filter, and dual-mass flywheel; repairs can be expensive.<\/li>\n<\/ul>\n<p> Always fill the tank with fuel recommended by the vehicle manufacturer. <strong>Error at the gas station<\/strong> \u2014 especially adding gasoline to a diesel engine \u2014 can seriously damage the injection system. In this case, do not start the engine and contact roadside assistance or a service center.<\/p>\n<h2> Frequently Asked Questions (FAQ)<\/h2>\n<p> <strong>Is diesel fuel the same as fuel oil?<\/strong><\/p>\n<p> In colloquial speech, yes. &quot;Diesel&quot; refers to both the internal combustion engine and its fuel\u2014diesel fuel (DPF). The name comes from the engine&#039;s inventor, Rudolf Diesel.<\/p>\n<p> <strong>What happens if I fill my diesel car with petrol?<\/strong><\/p>\n<p> Gasoline doesn&#039;t have the lubricating properties of diesel fuel and can damage the fuel pump and injectors. Most importantly, don&#039;t start the engine\u2014the fuel must be drained from the tank, preferably by a service center or roadside assistance service.<\/p>\n<p> <strong>Which is more economical \u2013 diesel fuel or gasoline?<\/strong><\/p>\n<p> Diesel engines generally consume less fuel, especially on the highway, but can be more expensive to purchase and maintain (diesel particulate filters, injectors, AdBlue). With low annual mileage and city driving, the fuel savings may not offset the higher maintenance costs.<\/p>\n<p> <strong>What is the difference between octane and cetane number?<\/strong><\/p>\n<p> The octane number describes gasoline&#039;s resistance to spontaneous combustion (the higher the number, the lower the risk of detonation). The cetane number describes how easily diesel fuel ignites (the higher the number, the faster and smoother the fuel ignites).<\/p>\n<p> <strong>Why do diesel engines perform poorly over short distances?<\/strong><\/p>\n<p> On short trips, the engine doesn&#039;t have time to warm up, and the diesel particulate filter (DPF) can&#039;t regenerate (burn off soot). The filter gradually clogs, which can lead to loss of power and costly repairs.<\/p>\n<h2> See also<\/h2>\n<ul>\n<li> What is the difference between 95 and 98 octane gasoline?<\/li>\n<li> What is the difference between a two-stroke and a four-stroke engine?<\/li>\n<li> What is the difference between 5w30 and 5w40 oils?<\/li>\n<li> What is the difference between E5 and E10 gasoline?<\/li>\n<\/ul>","protected":false},"excerpt":{"rendered":"<p>Gasoline differs from diesel fuel (diesel oil) primarily in the way it is ignited in the engine: the gasoline mixture is ignited by a spark plug, whereas<\/p>","protected":false},"author":1,"featured_media":175589,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[67,20],"tags":[70],"class_list":["post-175588","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-vopros-otvet","category-fakty","tag-chem-otlichaetsya"],"_links":{"self":[{"href":"https:\/\/bukvaved.top\/en\/wp-json\/wp\/v2\/posts\/175588","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/bukvaved.top\/en\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/bukvaved.top\/en\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/bukvaved.top\/en\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/bukvaved.top\/en\/wp-json\/wp\/v2\/comments?post=175588"}],"version-history":[{"count":1,"href":"https:\/\/bukvaved.top\/en\/wp-json\/wp\/v2\/posts\/175588\/revisions"}],"predecessor-version":[{"id":175590,"href":"https:\/\/bukvaved.top\/en\/wp-json\/wp\/v2\/posts\/175588\/revisions\/175590"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/bukvaved.top\/en\/wp-json\/wp\/v2\/media\/175589"}],"wp:attachment":[{"href":"https:\/\/bukvaved.top\/en\/wp-json\/wp\/v2\/media?parent=175588"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/bukvaved.top\/en\/wp-json\/wp\/v2\/categories?post=175588"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/bukvaved.top\/en\/wp-json\/wp\/v2\/tags?post=175588"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}