2018 Acura MDX Engine Problems

NHTSA component category: ENGINE · data through 07/14/2026

35Engine complaints

22%Of all 159 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

ENGINE35 · 22%

FUEL/PROPULSION SYSTEM28 · 17.6%

ELECTRICAL SYSTEM26 · 16.4%

POWER TRAIN22 · 13.8%

FUEL SYSTEM, GASOLINE22 · 13.8%

Share of the 159 complaints citing each category; one complaint can cite several. Full breakdown on the 2018 Acura MDX overview page.

What owners report

“At 40k miles the connecting rod bearings gave out, car was taken to the shop and bottom end was rebuilt under warranty. at 80k miles…”NHTSA complaint 11624631 — filed 11/11/2024

“There are two outstanding recalls on my vehicle and my local acura is in not able to repair them until January despite the safety compromise…”NHTSA complaint 11596907 — filed 06/26/2024

“The dealership is refusing to fix the issue citing that the parts will not be available until fall of 2024. My vehicle is unsafe to…”NHTSA complaint 11576304 — filed 03/08/2024

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

Engine complaints by year filed

Frequently asked questions

Does the 2018 Acura MDX have engine problems?

Engine is the most-reported problem area on the 2018 Acura MDX: 35 of 159 complaints on file (22%). Complaints are unverified owner reports, not confirmed defects.

How many complaints does the 2018 Acura MDX have in total?

159 complaints were on file with NHTSA as of 07/14/2026. Across all categories, 3 involved a crash, 4 involved a fire, 3 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 07/14/2026.