Mitsubishi Sportback
1.8-litre MIVEC naturally aspirated engine with timing chain, successor to the 4G93. Technically closely related to the 4B11 but with less power. Timing chain is maintenance-free but vulnerable if oil is neglected. Oil change every 10,000 km is mandatory — never exceed the interval.
Composed everyday companion
Enough power for all situations, dependable MIVEC engine. The Sportback is slightly more entertaining than the saloon.
Engine Weaknesses 4
The 4B10 timing chain stretches with missed oil changes or incorrect oil viscosity. A ticking noise on cold start is the typical early sign. If ignored, chain failure and engine damage follow.
Symptoms: Metallic ticking on cold start (disappears after warm-up), engine management warning light, harsh variator shift noise
The MIVEC variable valve timing actuator on the 4B10 is sensitive to old or incorrect engine oil. Oil galleries inside the actuator clog and valve timing response becomes sluggish. Symptoms: power loss in the mid-rev range and engine fault code.
Symptoms: Power loss between 3,000 and 5,000 rpm, check engine light (P0012/P0022), rough running
Some Lancer CY owners report slightly elevated oil consumption from piston ring wear above 150,000–200,000 km. With regular oil changes (10,000 km interval) this rarely reaches a critical level.
Symptoms: Dropping oil level between service intervals, occasional slight blue smoke on cold start
Typical age-related issue on the 4B10 Lancer CY. The valve cover gasket hardens and starts to weep oil. Not a critical defect, but check regularly to prevent oil dripping onto the exhaust.
Symptoms: Oil smell after a long run, visible oil at the valve cover edge, occasional oil loss
Vehicle Weaknesses 5
Several Lancer CY model years are affected by the worldwide Takata airbag recall. Defective inflators can rupture on deployment and release metal shrapnel. Free replacement at a dealer — check status without fail.
Older examples in salt-belt areas show typical through-corrosion on sills, wheel arch edges and door bottom edges. The underbody is also affected where protection is lacking.
From around 100,000–120,000 km, control arm bushings and ball joints show noticeable wear. Knocking over uneven road surfaces is the most common symptom. Steering play and pull on braking can indicate further suspension issues.
With age, failures of the starter battery, mass air flow sensor and ABS sensors become more frequent. Defective central locking motors and rear light failures are also known weak points. The cause is usually corroded connectors and contacts.
With age, A/C condensers and connecting hoses develop leaks with refrigerant loss. The heater core is also prone to blockages, reducing heating output in winter. Simply topping up the refrigerant is not a lasting fix.
Reports & Tests
456 owner complaints filed with NHTSA (2007–2017). Most reported: Powertrain (133), Engine (78), Electrical (52).