2017 Mercedes-Benz E300 Engine Problems

NHTSA component category: ENGINE · data through 07/12/2026

36Engine complaints

27.7%Of all 130 complaints

#1Most-reported category

Source: U.S. NHTSA complaint data. Complaints are unverified reports from vehicle owners — a complaint is not a confirmed defect.

How engine ranks on this vehicle

ENGINE36 · 27.7%

ELECTRICAL SYSTEM22 · 16.9%

FUEL/PROPULSION SYSTEM20 · 15.4%

Unspecified / other18 · 13.8%

POWER TRAIN15 · 11.5%

Share of the 130 complaints citing each category; one complaint can cite several. Full breakdown on the 2017 Mercedes-Benz E300 overview page.

What owners report

“The vehicle is getting stuck in parking and can not shift out of park. The issue first happened at the dealership when looking into an…”NHTSA complaint 11632282 — filed 12/24/2024

“PCV regulator valve failure at69,000 miles on my 2017 Mercedes E300.. I understand this is common before 100,000 miles with the four cylinder turbo, I…”NHTSA complaint 11628826 — filed 12/04/2024

“malfunctioning positive crankcase ventilation (PCV) valve: Issue: The partial-load ventilation valve in the intake line assembly does not work as intended, causing the check engine…”NHTSA complaint 11619347 — filed 10/11/2024

Excerpts are shortened and scrubbed of personal details; they are individual, unverified reports.

Engine complaints by year filed

Frequently asked questions

Does the 2017 Mercedes-Benz E300 have engine problems?

Engine is the most-reported problem area on the 2017 Mercedes-Benz E300: 36 of 130 complaints on file (27.7%). Complaints are unverified owner reports, not confirmed defects.

How many complaints does the 2017 Mercedes-Benz E300 have in total?

130 complaints were on file with NHTSA as of 07/12/2026. Across all categories, 2 involved a crash, 2 involved a fire, 7 reported injuries, and none reported deaths.

What does NHTSA's engine category include?

NHTSA assigns each complaint to standard component categories; this page reports the ENGINE category exactly as NHTSA defines and records it.

About this data — Complaint figures on this page are consumer reports submitted to the National Highway Traffic Safety Administration (NHTSA), a U.S. government agency. NHTSA does not verify individual complaints; a complaint is not proof that a defect exists, and counts reflect what owners chose to report, not confirmed failure rates. Recall information comes from official NHTSA safety recall campaigns; recall repairs are free at authorized dealers. Always check your specific vehicle by VIN at nhtsa.gov/recalls. CarModelProblems.com is an independent site and is not affiliated with NHTSA or any vehicle manufacturer. Data through 07/12/2026.