The 1991 BMW 8-Series (E31) debuted as a sophisticated luxury grand tourer, designed to replace the E24 6-Series. This sleek 2-door coupe, produced from 1990 to 1999, initially featured the 850i trim with a potent V12 engine. Its unique pop-up headlights, pillarless design, and advanced electronics made it stand out. New, it commanded prices around $75,000-$85,000, establishing its reputation as a high-performance, exclusive German machine.
The Good
Its iconic V12 engine offers smooth, effortless performance for grand touring. The timeless pillarless design and luxurious, comfortable interior appeal emotionally. For the practical buyer, its unique styling and growing classic status offer potential appreciating value, while its advanced engineering ensures a commanding road presence and long-distance comfort, though not for efficiency.
The Bad
Known weaknesses include complex, often problematic electronics like window regulators and the General Module. The sophisticated V12 engine demands costly, meticulous maintenance, especially regarding the cooling and ignition systems. High parts costs, poor fuel efficiency, and a susceptibility to vacuum leaks are also significant watch-out areas for potential owners.
1991 BMW 8-Series: Quick Overview
- Engine Options: For the 1991 model year, the primary engine offered in the 850i was the M70B50, a 5.0-liter naturally aspirated V12.
- Horsepower: This V12 engine produced approximately 296 horsepower (221 kW; 300 PS DIN) and 332 lb-ft (450 Nm) of torque.
- Fuel Economy: Fuel economy was notably poor, typically ranging in the low teens, often around 10-15 MPG (miles per gallon) combined, depending on driving conditions and transmission. The V12 engine demands premium fuel.
- 0-60 Times: The 850i, with its V12 engine and either a 4-speed automatic or 6-speed manual transmission, achieved 0-60 mph acceleration times in the range of 6.5 to 7.0 seconds.
- Towing Capacity: The BMW 8-Series was not designed or typically rated for towing capacity. As a luxury grand tourer, towing is not an applicable specification.
- Trim-Level Features (850i): The 850i came generously equipped as a luxury vehicle. Standard features included:
- Luxurious leather upholstery and interior trim.
- Automatic climate control with dual-zone functionality.
- Power-adjustable front seats with memory function.
- Power windows, power mirrors, and power-adjustable steering column.
- Anti-lock Braking System (ABS) and Automatic Stability Control + Traction (ASC+T).
- Pop-up headlights and distinctive pillarless side windows.
- On-Board Computer (OBC) providing various vehicle data and diagnostics.
- Cruise control.
- An advanced stereo system for its time.
1991 BMW 8-Series Specifications
No records to be displayed
Vehicle History Report
What Problems Does the 1991 BMW 8-Series Have?
The 1991 BMW 8-Series, while a marvel of engineering, is infamous for its complex electronics and demanding maintenance. Frequently reported problems center around the intricate electrical systems. Window regulators are notorious for failing, often requiring expensive repairs. The General Module (GM) and Light Check Module (LCM) can suffer from age-related degradation, leading to various electrical gremlins, including non-functional interior lights or erratic dashboard warnings. Instrument cluster pixelization is also a common complaint, making readouts difficult.
Under the hood, the M70 V12 engine, while powerful, has several long-term reliability concerns. Vacuum leaks are prevalent due to the sheer number of hoses and connections, leading to rough idling and reduced performance. The cooling system, including the radiator, water pump, and various hoses, is a known weak point and requires diligent preventative maintenance to avoid overheating, which can be catastrophic for a V12. Oil leaks from valve covers and oil pan gaskets are common due to aged seals. The ignition system, with two distributors and rotors, is complex and expensive to service.
Other reported issues include problems with the electric seat motors, pop-up headlight motors, and the Electronic Damping Control (EDC) suspension system, which can be prohibitively expensive to repair when components fail. Fuel system components, such as fuel pumps and lines, can also require attention over time. While not prone to widespread recalls, specific issues may have led to targeted service bulletins. Overall, long-term reliability is dependent on consistent, specialized, and costly maintenance; neglect can quickly turn an 8-Series into a money pit.
Under the hood, the M70 V12 engine, while powerful, has several long-term reliability concerns. Vacuum leaks are prevalent due to the sheer number of hoses and connections, leading to rough idling and reduced performance. The cooling system, including the radiator, water pump, and various hoses, is a known weak point and requires diligent preventative maintenance to avoid overheating, which can be catastrophic for a V12. Oil leaks from valve covers and oil pan gaskets are common due to aged seals. The ignition system, with two distributors and rotors, is complex and expensive to service.
Other reported issues include problems with the electric seat motors, pop-up headlight motors, and the Electronic Damping Control (EDC) suspension system, which can be prohibitively expensive to repair when components fail. Fuel system components, such as fuel pumps and lines, can also require attention over time. While not prone to widespread recalls, specific issues may have led to targeted service bulletins. Overall, long-term reliability is dependent on consistent, specialized, and costly maintenance; neglect can quickly turn an 8-Series into a money pit.
How long will the 1991 BMW 8-Series last?
Well-maintained 1991 BMW 8-Series examples can readily exceed 150,000 to 200,000 miles, with some owners pushing beyond that. However, achieving such mileage typically involves significant investment in replacement parts and diligent maintenance over the years. The core V12 engine block is robust, offering good long-term durability if properly cared for, but its ancillary systems are not. Weaknesses over time predominantly involve the complex electronics, which often degrade or fail, leading to frustrating and expensive repairs. Rubber and plastic components throughout the engine bay, cooling system, and suspension also become brittle and fail with age, requiring regular replacement. Interior plastics and leather can show significant wear, and the intricate pop-up headlight mechanisms can become problematic. Ownership demands a commitment to addressing these inevitable age-related issues.
What Technology & Safety Features are Included?
The 1991 BMW 8-Series was a showcase of advanced technology for its era. Built-in tech included a sophisticated multi-function On-Board Computer (OBC) providing diagnostics, fuel consumption data, and trip information. Automatic climate control with dual-zone capabilities ensured passenger comfort. Power-adjustable front seats, mirrors, and a power-adjustable steering column underscored its luxury credentials. Cruise control was standard, as were power windows with the distinctive pillarless design. Optional tech included the Electronic Damping Control (EDC) system, allowing drivers to switch between comfort and sport suspension settings, and Servotronic steering for speed-sensitive power assistance.
For entertainment, the 850i typically featured a premium audio system, often a high-quality Becker or Alpine head unit, with an AM/FM cassette player and an optional trunk-mounted 6-disc CD changer. This provided a rich audio experience within its plush cabin.
Driver-assistance features were rudimentary by modern standards but advanced for the early '90s. These included Anti-lock Braking System (ABS) for enhanced stopping control and Automatic Stability Control + Traction (ASC+T), which helped prevent wheelspin and maintain vehicle stability, a crucial feature for a powerful rear-wheel-drive car. These systems provided a layer of active safety.
Safety features included standard driver and passenger airbags, which were becoming more common in luxury vehicles of this time, offering frontal impact protection. The rigid body structure incorporated side-impact protection beams within the doors, and seatbelt pre-tensioners were also standard. Due to the era and the vehicle's luxury niche, independent crash-test ratings from organizations like NHTSA or IIHS are generally not available for the 1991 BMW 8-Series. However, it met the contemporary safety standards and regulations of its production period.
For entertainment, the 850i typically featured a premium audio system, often a high-quality Becker or Alpine head unit, with an AM/FM cassette player and an optional trunk-mounted 6-disc CD changer. This provided a rich audio experience within its plush cabin.
Driver-assistance features were rudimentary by modern standards but advanced for the early '90s. These included Anti-lock Braking System (ABS) for enhanced stopping control and Automatic Stability Control + Traction (ASC+T), which helped prevent wheelspin and maintain vehicle stability, a crucial feature for a powerful rear-wheel-drive car. These systems provided a layer of active safety.
Safety features included standard driver and passenger airbags, which were becoming more common in luxury vehicles of this time, offering frontal impact protection. The rigid body structure incorporated side-impact protection beams within the doors, and seatbelt pre-tensioners were also standard. Due to the era and the vehicle's luxury niche, independent crash-test ratings from organizations like NHTSA or IIHS are generally not available for the 1991 BMW 8-Series. However, it met the contemporary safety standards and regulations of its production period.
What Colors Options are Available?
We’re working on this section!
In the meantime, feel free to explore the other sections for more content.
In the meantime, feel free to explore the other sections for more content.
1991 BMW 8-Series Prices and Market Value
When new in 1991, the BMW 850i retailed for approximately $75,000 to $85,000, placing it firmly in the premium luxury segment. Like most high-end vehicles, it experienced massive initial depreciation, with values plummeting significantly in its first decade. Today, current used market prices vary wildly based on condition. Project cars needing extensive work can be found for under $10,000, while good, drivable examples range from $15,000 to $30,000. Exceptional, low-mileage, well-maintained, or rare manual transmission examples, especially the later 850CSi, can command $40,000 to $60,000 or more, demonstrating an appreciation for pristine examples. Factors affecting resale value include mileage, comprehensive service history, overall mechanical and electrical condition, originality, and the desirability of a manual transmission. Rust and neglected electronics significantly depress value.
1991 BMW 8-Series Cost of Ownership
Owning a 1991 BMW 8-Series is unequivocally costly, not economical. Insurance can be substantial for a performance luxury vehicle, though classic car policies might offer savings. Fuel costs are high due to its thirsty V12 engine requiring premium gasoline. Maintenance and repair expenses are a significant factor; parts are specialized and expensive, and the complex electronics and engine demand expert labor, often costing thousands of dollars annually, even for well-maintained examples. Common issues like window regulators or cooling system overhauls can be particularly pricy. Long-term ownership is a financial commitment, suitable for enthusiasts prepared to invest substantially in its upkeep, not for the budget-conscious.
1991 BMW 8-Series Fuel Efficiency
No records to be displayed
1991 BMW 8-Series Insurance
Insurance for a 1991 BMW 8-Series is moderately priced, reflecting its status as a Vehicle with strong safety ratings and
reasonable repair costs.
reasonable repair costs.
How Does the 1991 BMW 8-Series Compare to Other Vehicle?
The 1991 BMW 8-Series competed in the exclusive luxury grand tourer segment against formidable rivals such as the Mercedes-Benz W140 S-Class Coupe (later CL-Class, like the 500SEC or 600SEC), the Porsche 928, and the Jaguar XJS. Less directly, the Lexus SC400 offered a different take on the luxury coupe.
In terms of performance, the 8-Series' V12 offered silky-smooth power delivery, making it an excellent high-speed cruiser, comparable to Mercedes' V8s and V12s. The Porsche 928, particularly in GTS guise, was more overtly a sports car, offering sharper handling and often quicker acceleration. The Jaguar XJS was a more traditional, softer grand tourer.
Regarding features, the 8-Series was a technological tour-de-force for its time, with cutting-edge electronics, a pillarless design, and luxurious amenities that often surpassed or matched the contemporary S-Class Coupe. The Lexus SC400 focused on refinement and bulletproof reliability but lacked the 'wow' factor and prestige of the German and British rivals.
Reliability is where the 8-Series often lagged. Its complex electronics and V12 engine maintenance requirements often meant higher running costs and more frequent issues compared to, for instance, the Lexus SC400, which was lauded for its dependability. Mercedes-Benz models of the era, while also complex, often had a reputation for robust build quality that could sometimes exceed the E31, though they were by no means cheap to maintain either. The Porsche 928 also had its own set of expensive, intricate maintenance demands.
Price new was comparable among these high-end grand tourers, all commanding premium figures. Today, used prices vary wildly based on condition and rarity, with the 8-Series now being a collector's item.
Similar Alternatives:
In terms of performance, the 8-Series' V12 offered silky-smooth power delivery, making it an excellent high-speed cruiser, comparable to Mercedes' V8s and V12s. The Porsche 928, particularly in GTS guise, was more overtly a sports car, offering sharper handling and often quicker acceleration. The Jaguar XJS was a more traditional, softer grand tourer.
Regarding features, the 8-Series was a technological tour-de-force for its time, with cutting-edge electronics, a pillarless design, and luxurious amenities that often surpassed or matched the contemporary S-Class Coupe. The Lexus SC400 focused on refinement and bulletproof reliability but lacked the 'wow' factor and prestige of the German and British rivals.
Reliability is where the 8-Series often lagged. Its complex electronics and V12 engine maintenance requirements often meant higher running costs and more frequent issues compared to, for instance, the Lexus SC400, which was lauded for its dependability. Mercedes-Benz models of the era, while also complex, often had a reputation for robust build quality that could sometimes exceed the E31, though they were by no means cheap to maintain either. The Porsche 928 also had its own set of expensive, intricate maintenance demands.
Price new was comparable among these high-end grand tourers, all commanding premium figures. Today, used prices vary wildly based on condition and rarity, with the 8-Series now being a collector's item.
Similar Alternatives:
- Mercedes-Benz 500SEC / 600SEC (W140 C140): Offers similar prestige and a robust, if equally complex, platform. Often considered more solidly built.
- Porsche 928: For a more sports-oriented grand touring experience, though with its own maintenance complexities.
- Lexus SC400: If ultimate reliability and lower ownership costs are paramount, sacrificing some European flair and V12 power.
- Modern BMW 6-Series (F12/F13) or current 8-Series (G15): For a contemporary grand touring experience with modern safety, technology, and improved daily usability.
Final Verdict: Is the 1991 BMW 8-Series a Good Vehicle?
The 1991 BMW 8-Series is ideal for passionate enthusiasts, collectors, or individuals seeking a distinctive, luxurious grand tourer with a powerful V12 engine and a timeless design. It's not for the faint of heart or those on a strict budget.
Is it worth buying? Absolutely, for the right buyer. It offers a unique driving experience and a strong sense of occasion, appreciating in value for well-preserved examples. However, this is a demanding classic car.
Purchasing should always be on the used market. Focus on acquiring the best possible example, preferably with a comprehensive service history detailing meticulous maintenance. A pre-purchase inspection by an E31 specialist is non-negotiable. While the 850i is the entry point, specific trims like the rare manual transmission cars or the high-performance 850CSi are most desirable. Be prepared for significant ongoing maintenance and repair costs; this vehicle requires substantial financial commitment beyond the initial purchase price. It's a rewarding ownership experience for those who embrace its complexities and costs.
Is it worth buying? Absolutely, for the right buyer. It offers a unique driving experience and a strong sense of occasion, appreciating in value for well-preserved examples. However, this is a demanding classic car.
Purchasing should always be on the used market. Focus on acquiring the best possible example, preferably with a comprehensive service history detailing meticulous maintenance. A pre-purchase inspection by an E31 specialist is non-negotiable. While the 850i is the entry point, specific trims like the rare manual transmission cars or the high-performance 850CSi are most desirable. Be prepared for significant ongoing maintenance and repair costs; this vehicle requires substantial financial commitment beyond the initial purchase price. It's a rewarding ownership experience for those who embrace its complexities and costs.
Drew B
Drew is a seasoned automotive expert and contributor to VinCheck.info. With nearly 15 years of experience as a former Porsche technician, he brings a wealth of hands-on knowledge to his writing. Born in North Carolina, a region renowned for its deep-rooted NASCAR culture, Drew developed a passion for cars early in life, often building and working on vehicles from a young age. At VINCheck, Drew leverages his extensive technical background to provide in-depth analyses of various vehicles. His articles often focus on engine performance, reliability, and maintenance insights, offering readers practical information grounded in real-world experience. Some of his notable contributions include reviews on the Mazda CX-5's longevity and detailed examinations of engine options for models like the 2011 Toyota Camry and Tacoma