2015 model year · 2,600+ owner reports · Updated May 2026
According to Au7o's analysis of 2,600+ owner reports, the 2015 Mercedes-Benz CLA has 3 documented known issues. No issues are rated critical, indicating generally reliable ownership. The most commonly reported issue is COMAND Infotainment Freeze with 1,000 owner reports. Across all issues, repair costs range from $200 to $1,500. DIY maintenance guides at au7o.io.
On the 2014-2019 Mercedes-Benz CLA, the M270 2.0L turbo engine develops oil leaks from the turbo oil feed and return lines. Oil drips onto the hot exhaust manifold, producing smoke and a burning oil smell. The turbo oil return line gasket is the most common leak point.
Replace the turbo oil return line gasket and o-rings. Clean all oil residue from the exhaust to stop the burning smell. Use new crush washers on the banjo bolt fittings.
Parts and tips from 900+ owners who fixed this issue
On the 2014-2019 Mercedes-Benz CLA, the Audio 20/COMAND infotainment system on the first-gen CLA freezes, goes black, or reboots randomly. The entry-level Audio 20 system is particularly prone to Bluetooth connectivity issues that crash the head unit.
Update the infotainment firmware to the latest version. Perform a hard reset by disconnecting the battery for 15 minutes. If the head unit has failed internally, replacement costs $800-1,500.
Parts and tips from 1,000+ owners who fixed this issue
On the 2014-2023 Mercedes-Benz CLA, the front struts and strut mount bearings develop clunking and creaking noises over bumps. The CLA shares its platform with the A-Class and both suffer from the same strut mount bearing wear issue, especially on models with sport suspension.
Replace the front strut mount bearings first as the cheapest fix. If noise remains, replace the full strut assemblies with OEM or Sachs replacements. Alignment required after strut replacement.
Parts and tips from 700+ owners who fixed this issue
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According to Au7o's analysis of 2,600+ owner reports, the 2015-2015 Mercedes-Benz CLA has 3 documented issues. The most frequently reported are: Turbo Oil Leak (M270), COMAND Infotainment Freeze, Front Suspension Strut Noise. None are rated critical, but regular maintenance is recommended.
The 2015-2015 Mercedes-Benz CLA has 3 known issues documented across 2,600+ owner reports. No issues are rated critical, suggesting generally good reliability. Regular maintenance following the manufacturer's schedule helps prevent many common problems.
Repair costs for known Mercedes-Benz CLA issues range from $0 to $1,500, depending on the specific problem and whether you choose DIY or professional repair. Au7o provides step-by-step DIY maintenance guides that can help reduce repair costs.
The M270 2.0L turbo engine develops oil leaks from the turbo oil feed and return lines. Oil drips onto the hot exhaust manifold, producing smoke and a burning oil smell. The turbo oil return line gasket is the most common leak point. Repairs typically run $200-$700. Severity: medium.
The Audio 20/COMAND infotainment system on the first-gen CLA freezes, goes black, or reboots randomly. The entry-level Audio 20 system is particularly prone to Bluetooth connectivity issues that crash the head unit. Repairs typically run $0-$1,500. Severity: low.
The front struts and strut mount bearings develop clunking and creaking noises over bumps. The CLA shares its platform with the A-Class and both suffer from the same strut mount bearing wear issue, especially on models with sport suspension. Repairs typically run $200-$1,000. Severity: low.
Content on this page was compiled with AI assistance using NHTSA complaints, TSBs, owner reports, and public automotive data. While we strive for accuracy, this information may contain errors. Always verify repair procedures and specifications with your vehicle's service manual or a qualified mechanic.
