{"id":511127,"date":"2022-04-10T20:22:35","date_gmt":"2022-04-11T00:22:35","guid":{"rendered":"https:\/\/www.fs1inc.com\/blog\/1991-bmw-m5-problems-reliability\/"},"modified":"2026-08-24T22:48:35","modified_gmt":"2026-08-25T02:48:35","slug":"1991-bmw-m5-problems-reliability","status":"publish","type":"post","link":"https:\/\/www.fs1inc.com\/blog\/1991-bmw-m5-problems-reliability\/","title":{"rendered":"1991 Bmw M5 Problems & Reliability"},"content":{"rendered":"","protected":false},"excerpt":{"rendered":"","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[366,258],"tags":[348,367,469],"class_list":["post-511127","post","type-post","status-publish","format-standard","hentry","category-bmw","category-car","tag-348","tag-bmw","tag-m5"],"acf":{"sku":"","year":"","make":"","model":"","post_title":"","featured_image":null,"introduction":"","what_is_pcm_programming":"","signs_your_year_make_model_needs_pcm_programming":"","product_title":"","product_view_link":"","how_pcm_programming_works_for_year_make_model":"","engine_size":"","engine_size_1_url":"","engine_size_2":"","engine_size_2_url":"","description":"The 1991 BMW M5 is a classic icon in the world of performance sedans, revered for its blend of luxury, power, and precision engineering. As part of the E34 generation, this model marked a significant evolution in BMW's M series, offering enthusiasts a thrilling driving experience wrapped in a sophisticated package. However, like any vehicle that has stood the test of time, the 1991 M5 comes with its own set of challenges. For those who appreciate the allure of vintage cars, understanding the common problems and reliability issues associated with this model is crucial to maintaining its legacy on the road.\n\nIn this blog post, we'll delve into the intricacies of the 1991 BMW M5, exploring the typical problems owners might encounter and offering insights into its overall reliability. Whether you're a seasoned BMW aficionado or a newcomer drawn to the charm of this classic, our aim is to equip you with the knowledge needed to keep your M5 running smoothly. From engine quirks to electrical gremlins, we'll cover the key areas to watch out for, ensuring that your journey with this iconic vehicle remains as exhilarating as the day it first rolled off the production line.","body_reported_problems":"

N\/A<\/p>","body_analysis":"

No major Body Components problems have been reported for the 1991 Bmw M5.<\/p>","brake_system_reported_problems":"

N\/A<\/p>","brake_system_analysis":"

No major Brake System problems have been reported for the 1991 Bmw M5.<\/p>","heating_&_cooling_reported_problems":"

N\/A<\/p>","heating_&_cooling_analysis":"

No major Heating & Cooling problems have been reported for the 1991 Bmw M5.<\/p>","drivetrain_reported_problems":"

N\/A<\/p>","drivetrain_reported_analysis":"

No major Drivetrain problems have been reported for the 1991 Bmw M5.<\/p>","interior_electronics_reported_problems":"

N\/A<\/p>","interior_electronics_analysis":"

No major Interior Electronics problems have been reported for the 1991 Bmw M5.<\/p>","cooling_system_reported_problems":"

N\/A<\/p>","cooling_system_analysis":"

No major Cooling System problems have been reported for the 1991 Bmw M5.<\/p>","ignition_&_wiring_reported_problems":"

N\/A<\/p>","ignition_&_wiring_analysis":"

No major Ignition & Wiring problems have been reported for the 1991 Bmw M5.<\/p>","engine_repairs_reported_problems":"

N\/A<\/p>","engine_repairs_analysis":"

No major Engine Repairs problems have been reported for the 1991 Bmw M5.<\/p>","exhaust_system_reported_problems":"

N\/A<\/p>","exhaust_system_analysis":"

No major Exhaust System problems have been reported for the 1991 Bmw M5.<\/p>","fuel_&_emissions_reported_problems":"

N\/A<\/p>","fuel_&_emissions_analysis":"

No major Fuel & Emissions problems have been reported for the 1991 Bmw M5.<\/p>","onboard_electronics_reported_problems":"

N\/A<\/p>","onboard_electronics_analysis":"

No major Onboard & Powertrain Control Electronics problems have been reported for the 1991 Bmw M5.<\/p>","strange_sounds_&_leaks_reported_problems":"

N\/A<\/p>","strange_sounds_&_leaks_analysis":"

No major Strange Sounds & Leaks problems have been reported for the 1991 Bmw M5.<\/p>","exterior_finish_reported_problems":"

N\/A<\/p>","exterior_finish_analysis":"

No major Exterior Finish problems have been reported for the 1991 Bmw M5.<\/p>","suspension_&_steering_reported_problems":"

N\/A<\/p>","suspension_&_steering_analysis":"

No major Suspension & Steering problems have been reported for the 1991 Bmw M5.<\/p>","transmission_repairs_reported_problems":"

N\/A<\/p>","transmission_repairs_analysis":"

No major Transmission Repairs problems have been reported for the 1991 Bmw M5.<\/p>","conclusion":"","image":""},"yoast_head":"\n1991 Bmw M5 Problems & Reliability<\/title>\n<meta name=\"description\" content=\"1991 Bmw M5 reliability overview and engine computer (PCM\/ECM) warning signs to watch for.\" \/>\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.fs1inc.com\/blog\/1991-bmw-m5-problems-reliability\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"1991 Bmw M5 Problems & Reliability\" \/>\n<meta property=\"og:description\" content=\"1991 Bmw M5 reliability overview and engine computer (PCM\/ECM) warning signs to watch for.\" \/>\n<meta property=\"og:url\" content=\"https:\/\/www.fs1inc.com\/blog\/1991-bmw-m5-problems-reliability\/\" \/>\n<meta property=\"og:site_name\" content=\"Flagship One Blog\" \/>\n<meta property=\"article:publisher\" content=\"https:\/\/www.facebook.com\/flagshipone\" \/>\n<meta property=\"article:author\" content=\"https:\/\/www.facebook.com\/flagshipone\/\" \/>\n<meta property=\"article:published_time\" content=\"2022-04-11T00:22:35+00:00\" \/>\n<meta property=\"article:modified_time\" content=\"2026-08-25T02:48:35+00:00\" \/>\n<meta name=\"author\" content=\"FlagshipOne\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:creator\" content=\"@theflagshipone\" \/>\n<meta name=\"twitter:site\" content=\"@theflagshipone\" \/>\n<meta name=\"twitter:label1\" content=\"Written by\" \/>\n\t<meta name=\"twitter:data1\" content=\"FlagshipOne\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\\\/\\\/schema.org\",\"@graph\":[{\"@type\":\"Article\",\"@id\":\"https:\\\/\\\/www.fs1inc.com\\\/blog\\\/1991-bmw-m5-problems-reliability\\\/#article\",\"isPartOf\":{\"@id\":\"https:\\\/\\\/www.fs1inc.com\\\/blog\\\/1991-bmw-m5-problems-reliability\\\/\"},\"author\":{\"name\":\"FlagshipOne\",\"@id\":\"https:\\\/\\\/www.fs1inc.com\\\/blog\\\/#\\\/schema\\\/person\\\/a3cf463514bd03eb7656953ef8f75700\"},\"headline\":\"1991 Bmw M5 Problems & Reliability\",\"datePublished\":\"2022-04-11T00:22:35+00:00\",\"dateModified\":\"2026-08-25T02:48:35+00:00\",\"mainEntityOfPage\":{\"@id\":\"https:\\\/\\\/www.fs1inc.com\\\/blog\\\/1991-bmw-m5-problems-reliability\\\/\"},\"commentCount\":0,\"publisher\":{\"@id\":\"https:\\\/\\\/www.fs1inc.com\\\/blog\\\/#organization\"},\"keywords\":[\"1991\",\"Bmw\",\"M5\"],\"articleSection\":[\"Bmw\",\"Car\"],\"inLanguage\":\"en-US\",\"potentialAction\":[{\"@type\":\"CommentAction\",\"name\":\"Comment\",\"target\":[\"https:\\\/\\\/www.fs1inc.com\\\/blog\\\/1991-bmw-m5-problems-reliability\\\/#respond\"]}]},{\"@type\":\"WebPage\",\"@id\":\"https:\\\/\\\/www.fs1inc.com\\\/blog\\\/1991-bmw-m5-problems-reliability\\\/\",\"url\":\"https:\\\/\\\/www.fs1inc.com\\\/blog\\\/1991-bmw-m5-problems-reliability\\\/\",\"name\":\"1991 Bmw M5 Problems & Reliability\",\"isPartOf\":{\"@id\":\"https:\\\/\\\/www.fs1inc.com\\\/blog\\\/#website\"},\"datePublished\":\"2022-04-11T00:22:35+00:00\",\"dateModified\":\"2026-08-25T02:48:35+00:00\",\"description\":\"1991 Bmw M5 reliability overview and engine computer (PCM\\\/ECM) warning signs to watch for.\",\"breadcrumb\":{\"@id\":\"https:\\\/\\\/www.fs1inc.com\\\/blog\\\/1991-bmw-m5-problems-reliability\\\/#breadcrumb\"},\"inLanguage\":\"en-US\",\"potentialAction\":[{\"@type\":\"ReadAction\",\"target\":[\"https:\\\/\\\/www.fs1inc.com\\\/blog\\\/1991-bmw-m5-problems-reliability\\\/\"]}]},{\"@type\":\"BreadcrumbList\",\"@id\":\"https:\\\/\\\/www.fs1inc.com\\\/blog\\\/1991-bmw-m5-problems-reliability\\\/#breadcrumb\",\"itemListElement\":[{\"@type\":\"ListItem\",\"position\":1,\"name\":\"Home\",\"item\":\"https:\\\/\\\/www.fs1inc.com\\\/blog\\\/\"},{\"@type\":\"ListItem\",\"position\":2,\"name\":\"1991 Bmw M5 Problems & Reliability\"}]},{\"@type\":\"WebSite\",\"@id\":\"https:\\\/\\\/www.fs1inc.com\\\/blog\\\/#website\",\"url\":\"https:\\\/\\\/www.fs1inc.com\\\/blog\\\/\",\"name\":\"Flagship One Blog\",\"description\":\"Flagship One Inc. 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