The 2022 E-Class represents Mercedes' W213 facelift generation with typical German complexity—solid fundamentals but expensive when things go sideways. The 2.0T (M264) suffers from oil dilution and bearing issues; the 3.0T inline-six is generally more robust but shares transmission and cooling vulnerabilities.
M264 2.0T Catastrophic Engine Bearing Failure
Occasional · high severityTypical onset: 40,000-80,000 mi
Symptoms: Metallic knocking at idle especially when warm, Low oil pressure warning, Metal shavings in oil during routine changes, Sudden loss of power or seized engine in worst cases
Fix: Complete engine rebuild or replacement required—connecting rod and main bearings fail prematurely due to oil dilution from direct injection and short-cycle driving. Expect 25-35 hours labor for rebuild, 15-20 hours for reman engine swap. MB has extended warranty on some VINs but not all.
Estimated cost: $12,000-18,000
9G-Tronic Transmission Oil Cooler Leaks
Common · medium severityTypical onset: 50,000-90,000 mi
Symptoms: Transmission fluid drips near front passenger wheel area, Low fluid warning on dash, Harsh shifts or delayed engagement when fluid level drops, Pink/red residue on plastic belly pan
Fix: Oil cooler lines corrode where they meet the cooler itself—poor sealing and material degradation. Requires removing front bumper and undertray for access. Factory fluid flush recommended after repair. 4-6 hours labor.
Estimated cost: $1,200-1,800
Transmission Mount (Engine Mount 4) Collapse
Common · medium severityTypical onset: 60,000-100,000 mi
Symptoms: Harsh clunk when shifting from Park to Drive, Excessive vibration at idle in Drive, Visible sagging of powertrain when inspected from below, Metallic bang over bumps from drivetrain movement
Fix: The rear transmission mount (upper dogbone mount) hydraulic fluid leaks out, losing damping. Part is expensive MB-only, requires exhaust removal and subframe drop for access. 3-4 hours labor.
Estimated cost: $900-1,400
High-Pressure Fuel Pump and Injector Contamination (M264)
Occasional · high severityTypical onset: 30,000-70,000 mi
Symptoms: Hard starting especially cold, Rough idle with misfires on multiple cylinders, Limp mode with P0087 fuel pressure codes, Metal contamination in fuel filter during service
Fix: HPFP cam follower wears prematurely sending metal through fuel system—requires pump, all four injectors, fuel rail, and lines replacement plus complete fuel system flush. TSB exists but MB won't always cover. 8-12 hours labor.
Estimated cost: $4,500-7,000
M264 Piston Ring Failure and Oil Consumption
Occasional · high severityTypical onset: 50,000-90,000 mi
Symptoms: Excessive oil consumption (1 qt per 1,000 miles or worse), Blue smoke from exhaust on startup or acceleration, Carbon buildup causing misfires, Failed emissions testing
Fix: Piston rings stick or crack from fuel dilution and carbon deposits—engine needs complete teardown with new pistons, rings, and often cylinder honing. Some owners get short blocks covered under powertrain warranty. 20-30 hours for proper rebuild.
Estimated cost: $8,000-14,000
Airmatic Suspension Strut Leaks (If Equipped)
Common · medium severityTypical onset: 70,000-120,000 mi
Symptoms: Vehicle sagging at one corner overnight, Airmatic warning message on dash, Compressor running excessively, Uneven ride height side-to-side
Fix: Air strut seals deteriorate—front struts fail more often than rears. Struts are dealer-only, compressor often needs replacement simultaneously. 2-3 hours per strut, 4-5 hours for compressor.
Estimated cost: $2,000-3,000 per strut; $1,800-2,500 for compressor
Skip the 2.0T four-cylinder unless you see proof of religious maintenance and oil analysis—too many grenaded engines under 80k miles. The inline-six is worth considering with extended warranty coverage, but budget generously for when that warranty expires.
AI-assisted summary drawn from NHTSA recall data, our labor-times database, and platform knowledge. Not a substitute for a pre-purchase inspection on a specific vehicle.