Bmw M5 Years to AvoidThe weakest years — and the one you should buy instead

The S85 V10 engine is notorious for premature rod bearing wear, which can lead to catastrophic engine failure if not addressed. VANOS pump/line failures and throttle actuators are also common, all leading to significant repair bills.

The SMG hydraulic pump and actuator assembly are prone to failure, often leaving the car stuck in gear or unable to engage. Clutch wear is also accelerated due to the aggressive nature of the system. Replacement costs are astronomical.

The advanced iDrive infotainment system is prone to glitches, freezing, and full unit failure. Beyond iDrive, various sensors, wiring harnesses, battery drains, and window regulators can fail, requiring costly diagnostics and repairs.

The S85 V10 engine is notoriously prone to rod bearing failure, especially on earlier models, though issues persist into later years. The VANOS system (pump, lines, solenoids) is also a significant failure point, as are the throttle actuators which control air intake for half the engine. These failures are often sudden and extremely costly.

The SMG III automated manual transmission's hydraulic unit, specifically the pump motor and associated sensors, is a well-documented failure point. This leads to inability to shift gears, getting stuck in gear, or complete transmission failure. Clutch wear is also accelerated due to its design, requiring costly replacement.

General BMW electrical gremlins are common, including iDrive system glitches, various sensor failures (camshaft position, oxygen, NOx), parasitic battery drain, and issues with the Electronic Damper Control (EDC) module. Troubleshooting can be extensive and parts expensive.

The S85 V10 is prone to rod bearing wear, leading to complete engine failure if not proactively addressed. VANOS high-pressure pump failures and throttle actuator failures are also common, resulting in severe performance limitations and high repair bills.

The electro-hydraulic SMG III pump is a known weak point, often failing suddenly and leaving the car stranded. Clutch wear is also rapid, and internal hydraulic leaks or sensor issues can cause erratic shifting or complete transmission lockout.

Various sensors (camshaft position, crank position, O2, ABS) fail regularly, triggering check engine lights and limiting performance. iDrive system glitches, battery drain issues, and faulty modules (e.g., footwell module, comfort access) are frequent complaints.

The rod bearings in the S85 V10 engine are a widespread known weakness, prone to premature wear and catastrophic failure, leading to a destroyed engine if not proactively replaced. The root cause is often debated, but it's a critical preventative maintenance item.

The variable valve timing (VANOS) system's high-pressure pump, accumulator, and associated lines are known failure points. Issues manifest as engine codes, rough idling, reduced performance, and can lead to expensive repairs or even engine damage.

The Sequential Manual Gearbox (SMG) III hydraulic pump assembly, specifically the electric motor within the pump, is a common failure point. This leads to inability to shift, transmission warning lights, and eventually renders the car immobile.

The S85 V10 engine is notoriously prone to rod bearing wear, which can lead to catastrophic engine failure if not addressed. This is often due to tight tolerances and oil circulation issues.

The complex 7-speed SMG III's hydraulic pump (often the motor or pressure sensor within) is a common failure point, leading to loss of gears, inability to shift, or complete transmission lockout. Replacement is costly.

The Variable Valve Timing (VANOS) system's high-pressure oil line is known to fail, along with solenoids and occasionally the main pump, leading to reduced performance, rough idle, and costly repairs.

The high-strung, individually-throttled S38B38 engine is prone to rod bearing wear, especially if oil changes are neglected or the engine is frequently revved cold. Carbon buildup on valves, intake manifold gasket leaks, and aging fuel system components are also common, leading to poor running or catastrophic failure if not addressed. VANOS issues, while less common than later M engines, can still occur.

The complex multi-link suspension and steering system utilizes numerous bushings, ball joints, and specialized components like the Electronic Damper Control (EDC) shocks. These components wear out, leading to loose steering, clunking noises, and compromised handling. EDC shock replacement is prohibitively expensive, often leading owners to convert to aftermarket coil-overs. Power steering pump failures and steering box leaks are also frequent.

Aging wiring harnesses, brittle plastic connectors, and numerous sensors (crankshaft, camshaft, oxygen) contribute to frequent electrical gremlins. Common issues include malfunctioning window regulators, central locking failures, instrument cluster pixel loss, and intermittent warning lights. The climate control system is prone to blower motor resistor failure, leading to erratic fan speeds or no fan operation.

The S85 V10 is prone to premature rod bearing wear, often leading to catastrophic engine failure without warning. VANOS high-pressure lines, pumps, and solenoids are also known weak points, as are throttle body actuators and coil packs.

The 7-speed SMG III automated manual transmission is a common source of trouble. The hydraulic pump for the SMG unit frequently fails, rendering the car undriveable. Clutch wear can also be rapid depending on driving style, leading to expensive replacements.

BMW's complex iDrive system, particularly the CCC (Car Communication Computer) unit, can fail, leading to non-functional infotainment. Battery drain issues are common, and various sensors (e.g., EDC, ABS/DSC) and modules can malfunction.

The S63Tü engine is prone to rod bearing wear and eventual failure, often without warning, leading to catastrophic engine damage. Other common issues include high-pressure fuel pump (HPFP) failures, fuel injector issues, and leaks from turbocharger oil lines and seals.

The 7-speed M-DCT is a highly complex unit, with common failures centering on the mechatronic unit and clutch packs. Mechatronic issues can cause harsh shifting, loss of gears, or complete transmission failure. Clutch pack wear can necessitate expensive replacement.

Modern BMWs are electronically intricate. Common issues include iDrive system glitches (freezing, reboots), various sensor failures (ABS, oxygen, VANOS solenoids), and wiring harness degradation in high-heat areas, leading to intermittent faults.

The S62 V8 is powerful but prone to VANOS unit failures (seals, solenoids), throttle position sensor issues, and oil consumption. Rod bearing wear, while not as universal as some internet lore suggests, is a significant risk, especially if oil change intervals are stretched or the engine is regularly tracked without proper oil analysis.

Due to its performance nature and age, virtually all suspension and steering components will be worn. This includes thrust arm bushings, control arms, ball joints, tie rods, and shock absorbers. Power steering pumps and high-pressure hoses are also common failure points.

Aging wiring harnesses, specifically in the trunk, are common sources of electrical gremlins affecting lights and remote functions. Instrument cluster pixel failures are almost universal, and various modules (ABS/DSC, light control module) can fail, leading to costly diagnostic and repair bills.

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 to failure, impacting performance and reliability.

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 the engine and chassis can also fail intermittently.

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.

The high-revving S38B36 engine is prone to rod bearing wear, especially if oil changes are neglected or if the engine has been frequently redlined. Valve adjustments are also critical and expensive if not done regularly. Oil leaks from the oil pan gasket, valve cover, and front timing cover are common age-related issues.

Original rubber bushings throughout the suspension and subframe degrade over time, leading to sloppy handling and clunking noises. Shocks and struts are expensive, particularly if the self-leveling system (SLS) is present on touring models. Power steering pump leaks and steering box play are also frequent.

Age-related degradation of wiring, relays, and sensors leads to a myriad of electrical gremlins. Common issues include instrument cluster pixel failures, window regulator failures, main relay issues causing no-starts, and various sensor faults (crank position, cam position) leading to rough running or limp mode.

Specific components like the VANOS unit (S38B38), timing chain guides, rod bearings, and head gaskets are prone to wear or failure, often requiring costly specialized repairs or a full rebuild due to age and high-performance demands.

All bushings (control arm, subframe, differential) wear out, leading to sloppy handling. Shock absorbers and the self-leveling suspension (SLS) system, if equipped, are expensive to replace or repair, often requiring conversion to coilovers.

Aging wiring harnesses, instrument cluster pixel failures, HVAC blower motor resistor issues, various sensor failures (crank/cam position), and window regulators are common, leading to frustrating intermittent issues or non-functional systems.

The double VANOS (Variable Nockenwellen Steuerung) system on the S62 V8 engine is prone to seal degradation and solenoid failure, leading to reduced power, rough idle, and rattling noises. Catastrophic failure can damage camshafts.

Like many BMWs of this era, plastic cooling system components (radiator, expansion tank, water pump impeller, hoses) degrade and become brittle with age and heat cycles, leading to sudden leaks and overheating. This can cause severe engine damage.

A myriad of age-related electrical issues plague the E39, including ABS/DSC module failure, instrument cluster pixel loss, camshaft position sensors, crankshaft position sensors, and various relays. These cause warning lights, erratic operation, or no-start conditions.

The S62's complex VANOS system (variable valve timing) is prone to failure, leading to rough idle, reduced power, and eventually catastrophic engine damage if neglected. Rod bearing wear, particularly on high-mileage or tracked cars, can also lead to complete engine failure. Heavy oil consumption is common.

Like many BMWs, the entire cooling system is a weak point. Plastic components (radiator end tanks, expansion tank, thermostat housing, water pump impeller) become brittle with age and heat cycles, leading to sudden leaks, overheating, and potential head gasket damage. A full system refresh is almost always required.

Aging wiring harnesses, control modules, and sensors are a frequent source of headaches. Common issues include instrument cluster pixel display failure, window regulators, sunroof motor failure, remote key issues, and intermittent warning lights due to module communication errors. Battery drains are also common.

While less prone than earlier S63 iterations, the S63Tü can still suffer from premature rod bearing wear, fuel injector failures, high-pressure fuel pump (HPFP) issues, and turbocharger component failures. Oil leaks from valve covers and oil pans are also common, exacerbated by heat and age. Neglecting oil changes or using incorrect oil significantly increases risk.

The M DCT is robust but requires specific and expensive maintenance, often neglected. Clutch pack wear is normal but costly to replace, and the mechatronic unit, while generally reliable, can fail, leading to shifting issues or complete transmission failure. Early fluid changes are crucial.

The adaptive suspension system's EDC struts are high-performance components designed for precise control. Over time, these struts can leak or electronic components can fail, leading to error messages and a compromised ride. Replacements are extremely expensive per corner.

The S38B35 engine requires precise valve adjustments every 15,000-20,000 miles. Neglecting this leads to accelerated wear on the camshafts, rocker arms, and can eventually cause significant noise and reduced performance. Timing chain tensioners and guides also degrade, risking catastrophic failure if not addressed.

Aging wiring harnesses, relays, and various electronic modules (e.g., OBC, power window controllers) can develop intermittent faults. Issues range from non-functional accessories to erratic engine sensor readings, which can be frustrating to diagnose and costly to repair due to scarce replacement parts.

All rubber bushings (control arms, subframe, sway bar links) are subject to significant wear and tear, exacerbated by the car's performance capabilities and age. Worn components lead to vague steering, excessive noise, and compromised handling, requiring comprehensive replacement.

Components like the airflow meter (AFM), fuel pump, injectors, and engine control unit (ECU) are prone to age-related failure. The specialized Bosch Motronic system is robust but requires specific diagnostics and expensive M-specific parts. Vacuum leaks are also common.

Due to its performance nature and age, all rubber bushings (control arms, subframe, sway bars), shocks/struts, and steering box wear out. Power steering hoses and pumps often leak. Neglecting these leads to poor handling and increased wear on other parts.

Biodegradable wiring insulation, common in BMWs of this era, can lead to widespread electrical gremlins, including intermittent sensor failures, window regulator issues, instrument cluster pixel loss, and parasitic battery drains. Aging relays and fuses are also frequent culprits.

The double VANOS units on the S62 engine are prone to failure, leading to rough idle, reduced power, and eventually catastrophic engine damage if neglected. Repair involves significant labor and expensive specialized parts.

Plastic components (radiator, expansion tank, thermostat housing, water pump impeller) become brittle and fail with age and heat cycles, leading to coolant leaks and overheating. The M5's high-performance nature exacerbates these issues.

Performance-oriented suspension bushings (thrust arms, control arms), ball joints, and tie rods wear out faster, impacting handling and ride quality. Power steering pumps and hoses are also common leak points.

The twin-turbo V8 is prone to issues including rod bearing wear, VANOS solenoid failures, high-pressure fuel pump (HPFP) issues, and carbon buildup on intake valves. Turbocharger oil lines can also leak. Neglect can lead to complete engine failure.

While generally robust, the Getrag 7-speed M-DCT is susceptible to mechatronics unit failure, clutch pack wear (especially with aggressive driving or tunes), and fluid leaks. Repair costs are extremely high.

Complex iDrive system, various sensors (ABS, wheel speed), electronic damper control (EDC) modules, and advanced driver-assist systems can develop intermittent faults. Battery drain issues are also not uncommon.

The high-revving S38B36 inline-six requires precise valve adjustments every 15k-20k miles. Neglecting this leads to accelerated valvetrain wear. Rod bearings are a known wear item that can lead to catastrophic failure if not proactively inspected or replaced around 80k-120k miles. Timing chain tensioners and guides also need attention.

Aging wiring harnesses become brittle, leading to shorts and opens. Common failures include the main relay, window regulators, sunroof motor, and various sensor failures (e.g., crankshaft position sensor, oxygen sensor). The On-Board Computer (OBC) display often suffers from pixel loss. Diagnostic can be complex and time-consuming.

All rubber bushings (control arms, trailing arms, sway bar links) degrade and require replacement, impacting the M5's sharp handling. Power steering pumps and hoses are prone to leaks. The Electronic Damper Control (EDC) shocks, while providing superior ride quality, are incredibly expensive to replace if they fail, often leading owners to convert to aftermarket coil-overs.

Rod bearings can wear prematurely, especially if oil changes are neglected or oil quality is poor. The single-VANOS unit can develop rattling or lose functionality due to seal and piston wear, affecting power delivery and requiring specialized repair.

The Electronic Damping Control (EDC) shocks and modules are incredibly expensive to replace, often failing due to age and sensor issues. Owners frequently convert to conventional suspension, which impacts originality and ride characteristics.

The wiring harness insulation can become brittle and crack with age, leading to short circuits and intermittent faults. Common failures include window regulators, instrument cluster pixel fade, and various sensor failures (crankshaft, camshaft, O2).

The Variable Valve Timing (VANOS) system is critical to the S62's performance and is a known weak point. Seals and solenoids degrade, leading to rattling noises, reduced power, rough idle, and check engine lights. If neglected, it can cause significant engine damage or require a costly full overhaul.

Like many older BMWs, the plastic components of the cooling system (radiator, expansion tank, water pump impeller) become brittle and prone to failure, often leading to leaks or catastrophic overheating if not addressed proactively. This can result in head gasket issues or worse.

The high-performance suspension places significant stress on components. Thrust arm bushings (often called 'lollipop' bushings) wear out, causing vibrations under braking and imprecise steering. Other control arm bushings, ball joints, and tie rods also degrade, impacting handling and tire wear. Power steering pumps and hoses are also susceptible to leaks.

The Variable Valve Timing (VANOS) system is prone to seals degradation, solenoid failures, and internal unit wear. This leads to rough idle, reduced power, fuel consumption issues, and a characteristic rattle, particularly noticeable on cold starts. If neglected, it can lead to timing issues and further engine damage.

Like many BMWs of this era, the M5's plastic cooling system components (radiator, expansion tank, water pump impeller, hoses) become brittle and fail with age and heat cycles. This can lead to leaks, overheating, and potential catastrophic engine damage if not addressed promptly.

The performance-tuned suspension uses many bushings and arms that wear out, leading to clunking noises, imprecise steering, and uneven tire wear. Power steering pumps and high-pressure hoses are also prone to leaks and failures, impairing steering feel and potentially causing fluid loss.

The Variable Valve Timing system on the S62 engine is complex and prone to solenoid failures, O-ring degradation, and cam sprocket issues, leading to rough idle, reduced power, and timing issues.

The connecting rod bearings are a known weak point on the S62, susceptible to premature wear leading to engine knocking and, if neglected, catastrophic engine failure. This is often debated but widely considered a critical preventative service.

Like many BMWs of this era, the M5's cooling system relies heavily on plastic components (radiator end tanks, thermostat housing, expansion tank) that become brittle with age and heat cycles, leading to leaks and potential overheating.

High-Pressure Fuel Pumps (HPFP) can fail, leading to misfires and reduced power. VANOS solenoids are also known to stick or fail, affecting valve timing and engine smoothness. Injectors can clog or leak, requiring replacement. Turbo coolant lines are also a known failure point.

The M5's sophisticated electronic systems can be temperamental. Issues range from iDrive glitches, parking sensor failures, to more critical problems like eccentric shaft sensor failures or various module communication errors leading to warning lights.

While the 7-speed M DCT is robust, aggressive driving can accelerate clutch pack wear. Output shaft seals can develop leaks. Over time, components like engine mounts, transmission mounts, and driveshaft flexible discs (guibos) will wear out, introducing vibrations and clunking.

Fuel injectors, ignition coils, and spark plugs are high-wear items, exacerbated by aggressive driving. Injectors can clog or fail, leading to misfires and potential catalytic converter damage. Turbo oil lines can also develop leaks.

While robust, the dual-clutch transmission can experience wear in the clutch packs under hard driving. Mechatronics unit failures, though less common than in earlier models, are still possible and represent a very costly repair.

The M5's highly integrated electronic systems, including the iDrive controller, various sensors (e.g., ABS, wheel speed), and wiring harnesses, can develop intermittent faults. Battery drain issues from parasitic draws are also reported.

As a first-generation hybrid M5, integration and long-term durability of the electric motors, battery pack, and associated control units are unproven. Potential for software glitches, charging system failures, and hybrid component degradation could lead to complex, high-cost diagnostics and repairs.

The sophisticated adaptive M suspension, active roll stabilization, and integrated braking system components are subject to immense stress from spirited driving. Malfunctions in electronic dampers, control modules, or active anti-roll bars can result in significant repair bills for specialized parts.

The high-output S68 twin-turbo V8 engine, especially when paired with a hybrid system, operates under extreme thermal loads. Potential issues include leaks from plastic coolant lines, water pump failures, or premature turbocharger wear due to heat cycling and high boost pressures.