2018 Mercedes-Benz E-Class Problems: 2 Issues Every Owner Should Know
2018 model year · 2,100+ owner reports · Updated April 2026
According to Au7o's analysis of 2,100+ owner reports, the 2018 Mercedes-Benz E-Class has 2 documented known issues. No issues are rated critical, indicating generally reliable ownership. The most commonly reported issue is Crankshaft Position Sensor Failure with 1,300 owner reports. Across all issues, repair costs range from $100 to $800. DIY maintenance guides at au7o.io.
All 2 Known Issues
On the 2010-2018 Mercedes-Benz E-Class, the crankshaft position sensor fails due to heat exposure and oil contamination, causing intermittent stalling, no-start conditions, and rough running. The sensor is mounted near the flywheel and exposed to high temperatures.
Common Symptoms
- Intermittent stalling while driving
- Engine cranks but will not start
How to Fix
Replace the crankshaft position sensor. A straightforward repair — the sensor is accessible from under the vehicle near the transmission bellhousing. Use OEM or Bosch sensor for reliability.
What Owners Are Using
Parts and tips from 1,300+ owners who fixed this issue
- UpgradeBosch 0261210302 crankshaft position sensor — Bosch is the OEM supplier for Mercedes. Avoid cheap no-name sensors that fail within months. (Bosch Crankshaft Position Sensor)
On the 2014-2020 Mercedes-Benz E-Class, the turbo oil feed and return lines on the M274 2.0L turbo engine develop leaks at the banjo bolt fittings and gaskets. Oil drips onto the exhaust manifold, creating smoke and a burning oil smell.
Common Symptoms
- Burning oil smell from engine bay
- Visible smoke from turbo area after driving
How to Fix
Replace the turbo oil feed line and crush washers. Tighten to the correct torque specification. Clean oil residue from the exhaust to eliminate the burning smell.
What Owners Are Using
Parts and tips from 800+ owners who fixed this issue
- TipAlways use new copper crush washers when retightening banjo bolts. Reusing old washers is the #1 cause of repeat leaks.