Mitsubishi ASX 1.6 MIVEC

The continuously variable CVT automatic transmission is the ASX's biggest reliability weakness, with documented failure rates of 20-30% within 160,000 km. Particularly common in 2011-2015 models but affects all years. Symptoms include jerky acceleration, delayed response, unusual noises during load changes, and complete transmission failure switching the vehicle to limp mode. First signs can appear as early as 80,000 km, though most failures occur between 100,000-150,000 km. Since 2014 Mitsubishi has been aware of these issues. In 2016 they recalled over 80,000 Outlander and Lancer vehicles with CVT transmissions for delayed acceleration problems. Repair costs €3,000-4,500 depending on extent of damage; complete replacement can reach €6,000-7,000. Manual gearbox ASX models are significantly more reliable.

This is a widespread issue affecting the first-generation ASX (2010-2019). Water enters through the boot switch due to inadequate clearance between the switch and upper panel, causing the edge of the switch to scratch the coating and allow water intrusion. Rust appears around the tailgate liftgate switch area and underbody parts. Owner forums confirm "they ALL seem to do it." Mitsubishi issued a Technical Service Bulletin instructing dealers to submit photos to review rusted cases. Repair typically costs €300-600 per affected area depending on extent of corrosion. Additionally, gas struts on the tailgate (April 2010 - September 2014 production) can detach due to corrosion - this is a separate recall. Covered under Mitsubishi's 7-year/160,000 km perforated rust warranty if still applicable.

The 1.6 MIVEC 4A92 engine develops excessive oil consumption particularly in higher-mileage vehicles (100,000+ km). Owners report needing to top up oil every 2,000-3,000 km with no visible external leaks. This typically indicates worn piston rings or valve seals causing the engine to burn oil internally. Blue exhaust smoke during acceleration confirms oil burning. If ignored, this leads to low oil levels, rough idle, increased engine wear, and eventual engine damage. Diagnosis requires compression or leak-down test to assess cylinder sealing. Minor cases may only require valve seal replacement (€800-1,200), but severe wear necessitates piston ring replacement or complete engine rebuild (€2,000-2,500). Check oil level at every fuel fill-up if buying a higher-mileage ASX.

Air conditioning system typically shows failures between 80,000-120,000 km. Symptoms include insufficient cooling capacity, unusual clunking or humming noises from the compressor, warm air from dashboard vents while AC is on, and complete cooling failure. The compressor can typically endure the ASX's lifespan but likelihood of failure increases after 150,000 km. Common causes include dirty radiator blocking airflow, damaged control valve, low/excessive refrigerant levels, clogged expansion valve, or faulty compressor clutch. Compressor parts cost €170-410; complete replacement with labor runs €700-1,400. Note: 2023+ models have a known high-pitch whistling/squealing noise from AC compressor that starts 10 minutes after shutdown - Mitsubishi released a TSB stating this is a characteristic of the vehicle and won't fix under warranty.

The infotainment system shows frequent malfunctions after 2-3 years of use. Bluetooth connection issues include constant disconnections, inability to recognize paired devices, or complete failure of Bluetooth function. Touchscreen can become partially or completely unresponsive - some owners report the touchscreen performs no action for short periods. Particularly widespread in 2015+ models, even affecting newer 2024 models with screens making buzzing sounds and spontaneously turning off during drives. Software updates often bring only temporary improvements; symptoms typically worsen in extreme temperatures or after long parking periods. Soft reset: hold power button 10-15 seconds. Hard reset: disconnect battery for 10 minutes to clear glitches. If screen remains unresponsive after resetting, it needs replacement due to damaged internal components (€800-1,200 at dealer). Complex infotainment systems require special diagnostic equipment.

Owners commonly report excessive noise when driving over bumps or uneven surfaces - clunking, rattling, or squeaking sounds. Caused by worn bushings, shock absorbers, or struts not damping properly. Some drivers note bouncy rides or excessive body roll during cornering. Excess movement may indicate problems with suspension bushes, ball-joints, springs, or shock absorbers. Regular inspection and replacement of worn components (bushings, shocks, struts) maintains optimal performance. Typical costs: rear sway bar with polyurethane bushings ~€350 + €50 fitting; shock/strut replacement €500-800 depending on how many corners need work. Many owners report that replacing worn bushings and struts significantly improves ride quality.

Electrical system issues include unexpected battery draining, dim or flickering headlights, weak/dead battery despite being relatively new, grinding or whining noises from alternator, and electrical component malfunctions. Most Mitsubishi models have a battery-shaped warning light on the dashboard - if this illuminates while driving, the alternator is struggling to keep up with power demands. The alternator charges the battery while the engine runs; a faulty alternator cannot maintain battery charge. Alternator replacement costs €585-850+ depending on placement and whether other components need removing for access. Battery replacement adds €100-200. Always check battery condition, ensure terminals are corrosion-free, and diagnose alternator before replacing parts.

Water pump failure typically occurs after extended use. Symptoms include coolant warning light illuminating, engine overheating, or poor cabin heating. Water pump parts for the ASX range from €20-85. Total replacement including labor costs €400-800 depending on engine accessibility and whether you use dealer or independent mechanic. Mechanics recommend replacing the thermostat when replacing the water pump to prevent future issues, especially if the thermostat is old or original. Regular coolant system maintenance and monitoring coolant level/condition helps prevent premature failure.