1990 BMW M5 Reliability ReportCommon Problems, Repair Costs & Expert Verdict
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Quick Facts · 1990 BMW M5
- Has 1 NHTSA recall on record — the most notable involves the engine and engine cooling:cooling system.
- Scores 10 points below the strongest nearby year — the 1989 BMW M5 earns a 72.
- The system most likely to surface first: engine (s38b36) (major severity).
The 1990 BMW M5 at a glance
- Is the 1990 BMW M5 reliable?
- Autojunket rates the 1990 BMW M5 62/100 (grade D+), categorized as high risk. A thrilling analogue driving machine that demands a deep financial commitment and mechanical understanding from its owner.
- Should I buy a used 1990 BMW M5?
- Autojunket recommends reading the full reliability report before buying a 1990 BMW M5. This M5 is a masterpiece of automotive engineering from its time, delivering an unmatched driving experience. However, it demands a significant financial and time commitment to own and maintain. Purchase only if you have a substantial budget for upkeep, a trusted specialist, or strong DIY skills. This is a passion p…
- Which BMW M5 years are the most reliable?
- Best model years to buy: For the S38B36 engine, 1989-1993 models are very similar, with condition being far more important than a specific year. Later S38B38 (1992-1995 for ROW) offer more power but share similar core maintenance needs.. Years to avoid: No specific years to avoid for the E34 M5; focus solely on an individual car's documented maintenance history and current condition..
- What are the most common problems with the 1990 BMW M5?
- The top failure points on the 1990 BMW M5 are Engine (S38B36) (typically around 60,000-120,000 miles), Electrical System (typically around 90,000-150,000 miles), Suspension & Steering (typically around 70,000-130,000 miles). Autojunket's full report includes repair-cost ranges and inspection checklists for each.
- At what mileage do problems start on the 1990 BMW M5?
- The first major mileage danger zone for the 1990 BMW M5 is around 30,000. Low Risk Zone — At this mileage, provided the car has been driven regularly and properly maintained, it's relatively fresh. Focus on verifying routine service history and addressing any minor age-related issues from sitting.
Every answer is generated from real repair, recall, and ownership data — full breakdown in the report.
Read the full free reportShould You Buy the 1990 BMW M5?
The 1990 BMW M5 is a highly desirable performance classic, but it comes with a significant reliability caveat due to its age and high-performance nature. Expect substantial investment in maintenance and repairs; this is not a car for the faint of heart or light of wallet. Ownership is a labor of love, requiring commitment to truly enjoy its legendary driving dynamics.
This M5 is a masterpiece of automotive engineering from its time, delivering an unmatched driving experience. However, it demands a significant financial and time commitment to own and maintain. Purchase only if you have a substantial budget for upkeep, a trusted specialist, or strong DIY skills. This is a passion p…
Best Model Years
For the S38B36 engine, 1989-1993 models are very similar, with condition being far more important than a specific year. Later S38B38 (1992-1995 for ROW) offer more power but share similar core maintenance needs.
Years to Avoid
No specific years to avoid for the E34 M5; focus solely on an individual car's documented maintenance history and current condition.
Biggest Strengths
- Robust S38B36 engine (if meticulously maintained)
- Excellent Getrag 280 manual transmission durability
- Timeless design and outstanding driving dynamics
Top Risk Areas
The systems that tend to fail first on the 1990 BMW M5, with the typical mileage window when each becomes a concern. Detailed repair-cost ranges and exact what-to-check inspection notes are in the full report.
Oil leaks from valve covers and front timing cover, requiring gasket replacement. Regular valve adjustments are critical; neglected adjustments lead to valve train wear. Fuel system components (injectors, pump, lines) are aging and prone…
Aging wiring harnesses become brittle, leading to shorts or open circuits. Common failures include instrument cluster pixel loss, window regulators, central locking modules, and various relays (fuel pump, main relay). Sensors throughout…
Due to age and performance demands, control arm bushings, tie rod ends, sway bar links, and shock absorbers are almost certainly worn out, leading to loose handling and clonking noises. Steering box play is common, affecting precision.
1990 BMW M5 Mileage Danger Zones
The mileage windows when the 1990 BMW M5 most commonly needs attention. Plan ahead, budget accordingly, and inspect before you cross each threshold.
Low Risk Zone
At this mileage, provided the car has been driven regularly and properly maintained, it's relatively fresh. Focus on verifying routine service history and addressing any minor age-related issues from sitting.
Maintenance Zone
This mileage typically marks the need for the first major round of wear-item replacements. Expect suspension bushings, belts, hoses, and possibly brake components to require attention. Valve adjustments are due.
Elevated Risk Zone
Beyond 90k, the risk of significant component failures rises. Electrical gremlins become more prevalent, and major engine items like the fuel system or even a clutch replacement might be necessary. A comprehensive 'reset' is often needed.
High Risk Zone
Cars at this mileage have likely endured years of wear. If maintenance has been neglected, major engine or transmission overhauls are possible. A significant upfront investment will be required to bring the car back to reliable condition.
1990 BMW M5 Ownership Cost Outlook
What it typically costs to keep the 1990 BMW M5 on the road. Full 5-year cost-of-ownership projection and major-failure-risk forecast are in the report.
Annual Maintenance
$1,500-3,000 (for an enthusiast-owned, well-maintained example)
Moderate Repairs
$1,000-3,000 per incident (e.g., suspension refresh, fuel system overhaul) occasionally
How Long Does the 1990 BMW M5 Last?
While high-mileage M5s can still be excellent drivers, be prepared for substantial upfront costs to refresh worn components. Low-mileage examples may have issues from prolonged storage (dried seals, seized components), so condition and comprehensive service history always trump odometer readings.
What 1990 BMW M5 Owners Actually Say
What Owners Love
- Exceptional driving dynamics and chassis balance for a sedan.
- Glorious, high-revving S38 inline-six engine sound and power delivery.
- Timeless, understated 'sleeper' styling that ages gracefully.
- High-quality interior materials and excellent ergonomic design.
Common Frustrations
- Extremely high maintenance and repair costs, requiring specialist knowledge.
- Parts availability for specific M5 components can be challenging and expensive.
- Frequent electrical gremlins (e.g., OBC pixels, window regulators).
- Poor fuel economy, especially when driven enthusiastically.
Who Should Buy the 1990 BMW M5?
Best For
- Dedicated BMW enthusiasts and collectors
- Drivers seeking an analogue, involving performance sedan
- Individuals with a strong mechanical aptitude and DIY capability
Not Ideal For
- Budget-conscious buyers seeking affordable performance
- Those who need a truly reliable daily driver without unexpected repairs
How the 1990 BMW M5 Compares to Rivals
The E34 M5 offers a more visceral, analogue driving experience than many of its luxury sedan contemporaries. While its reliability is not on par with Japanese luxury cars, it holds up reasonably well for a high-strung German performance car of its era, provided maintenance is…
More Reliable Than
- Mercedes-Benz 500E/E500 (W124) in terms of raw driver engagement and manual transmission option
- Audi S4 (C4) in terms of steering feel and engine character
Comparable To
- Lotus Carlton/Omega in terms of exclusivity and analogue performance, but with better parts availability
NHTSA Recalls
1 recall on record from NHTSA. Check your VIN atnhtsa.gov to see if the repair was performed.
ENGINE AND ENGINE COOLING:COOLING SYSTEM
VEHICLE DESCRIPTION: PASSENGER VEHICLES. A MALFUNCTION OR FAILURE OF A COOLANT SYSTEM COMPONENT, SUCH AS A THERMOSTAT, WATER PUMP, OR FAN BELT, CAN RESULT IN SIGNIFICANTLY INCREASED COOLANT TEMPERATURE AND SYSTEM PRESSURE. IF THE INDICATIONS OF A CRITICAL OVERHEATING CONDITION IS NOT NOTICED BY THE DRIVER, IT IS POSSIBLE THAT DAMAGE TO, OR FAILURE OF, A COOLANT SYSTEM COMPONENT COULD OCCUR.
What breaks on the 1990 BMW M5?
Full reliability breakdown — engine, transmission, rust, electrical. With repair costs and mileage danger zones.
Autojunket OSC · OSC Transfer
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BMW M5 by Year
Compare AutoScores across nearby years of the BMW M5. Click any year for its full report.
If You're Considering This, Also Look At
Similar class, similar year range — ranked by AutoScore.
Relevant Products for Your 1990 BMW M5
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Where the 1990 BMW M5 report beats Carfax + CR
Carfax tells you if it crashed. Consumer Reports rates the whole nameplate. Autojunket tells you what will actually break on this specific year — and how to negotiate it.
Year-specific reliability score
Common problems + repair costs
Mileage danger zone map
AI negotiation script + walk-away price
Single report price
Frequently Asked Questions
Related Comparisons
Sell your 1990 BMW M5 for what it's actually worth.
Log every service on your BMW M5. When it's time to sell, hand the buyer a signed PDF — every receipt, mileage-verified, close the deal at your price.
- OSC Transfer PDF — every receipt
- Snap-a-receipt AI log
- Fuel & mileage tracker
- Shareable buyer view link
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