Appears to have issues shifting from d4 to d5 or while in d5. Roughly around 1.6k RPM the vehicle sounds like it is driving over rumble strips. I think it might be a torque converter problem.
2015 Acura MDX powertrain problems
severe 10 complaints filed with NHTSA · avg repair $2,500 · see powertrain across all vehicles →
Complaints
10
Recalls
0
Avg fix
$2,500
1crash
1injury
When does it fail?
Of the 10 powertrain complaints filed for the 2015 Acura MDX, here's the actual mileage breakdown — failures cluster heaviest at 50,000-75,000 mi.
0-25k
25-50k
50-75k
75-100k
100-125k
125-150k
150k+
Each bar shows the share of total complaints filed at that mileage range. Peak failure window highlighted. Some owners report problems earlier; some make it well past 150,000 miles symptom-free. Maintenance habits and driving conditions shift the curve as much as mileage alone.
What stands out
No new NHTSA powertrain complaint has been filed on this vehicle in over 5 years — the issue may be aging out of the active population.
The failure pattern owners describe
Buyer takeaway: The 2015 MDX powertrain has documented transmission shudder and slip issues, particularly between 30–50 mph, with some owners experiencing unresolved problems across 100,000+ miles. Acura has issued service bulletins and fluid recalls, but repairs are inconsistent, often temporary, and may be denied if mileage exceeds coverage limits or issues cannot be reproduced at the dealership.
Owners consistently report transmission shudder and vibration between 30–50 mph that Acura has acknowledged via service bulletin. Some describe the sensation as driving over rumble strips around 1.6K RPM, especially on inclines. Fluid changes provide temporary relief in some cases, but owners say they need fluid changes every 5,000–10,000 miles instead of the recommended 30,000-mile interval. Transmission slip and hesitation—where the transmission fails to shift smoothly before returning to normal—also appears across multiple reports, occurring at cruising speeds and sometimes persisting unresolved across 100,000-mile ownership spans.
One owner experienced RPM fluctuation and jumpy acceleration at low speeds, with a check engine light tied to emission faults. Dealerships have inconsistently diagnosed these issues; one shop referenced an Acura service bulletin, but the manufacturer's dealership could not reproduce the problem.
Two separate safety complaints describe rollback: one where the car rolls backward after being shut off in Drive instead of Park, which Acura claims is a known feature, and another where a parked vehicle rolled forward on an incline, injuring the owner. Neither issue was resolved by dealers.
A power trunk issue—rapid descent nearly trapping occupants—was denied coverage by both the dealership and Acura customer care.
Same Acura MDX powertrain reports on nearby years: 2012 · 2014 · 2016 · 2017 · 2018
Failure modes owners describe
Transmission Shudder/Torque Converter Shutter
Torque converter shudders and vibrates during acceleration or at cruising speeds between 30–50 mph, often worse on slight inclines. Owners report the vehicle sounds like driving over rumble strips around 1.6K RPM, particularly when shifting between higher gears (D4 to D5). Fluid changes provide temporary relief, but the issue returns.
When: 30–50 mph cruising; around 1.6K RPM; occurs within first 72,000–80,000 miles for some owners
Symptoms owners cite: Shuddering or vibration at 30–50 mph; Erratic acceleration fluctuations; Vehicle sounds like rumble strips around 1.6K RPM; Shudder worse on slight inclines; Issue reoccurs after transmission fluid changes
Repairs/costs cited: Some owners report dealership changed transmission fluid under recall; temporary fix requiring fluid changes every 5,000–10,000 miles instead of manufacturer-recommended 30,000 miles. No permanent repair identified in narratives.
Recalls/TSBs owners mention: Acura issued a service bulletin covering transmission issues up to 80K miles. One owner reported Acura dismissed concerns, stating owner drove vehicle too much. Dealership acknowledged fluid recall exists.
Transmission Slip and Hesitation
Transmission slips and hesitates to shift normally, then returns to normal operation. Occurs unpredictably during cruising at street and highway speeds (35–50 mph). One owner reports this issue persisted from 25,000 miles to 125,000 miles without improvement or worsening.
When: 35–50 mph cruising; occurs intermittently across mileage range
Symptoms owners cite: Transmission slips; Hesitates to shift; Erratic shifting behavior returning to normal; Occurs at 35–50 mph
Repairs/costs cited: Owner took vehicle to dealer multiple times; no diagnosis or repair completed. Issue remained unresolved across 100,000-mile ownership span.
Uneven Idle and RPM Fluctuation
At low speeds and during sudden acceleration, transmission shifts unevenly and interrupts power delivery. RPM dial jumps up and down at constant highway speeds without settling. Check engine light may illuminate intermittently with emission system faults. Local shop diagnosed per Acura service bulletin, but dealership could not reproduce issue.
When: Low speed and sudden acceleration; inconsistent reproducibility
Symptoms owners cite: Jumpy, uneven transmission engagement; Interrupted power delivery at low speed; RPM fluctuation at constant highway speed; Check engine light on emission system fault
Codes mentioned: Emission system fault code (specific code not stated)
Repairs/costs cited: New spark plugs and oil/filters installed. Local shop deferred further work to dealership. Issue recurred after dealership visit.
Recalls/TSBs owners mention: Acura service bulletin covers this issue up to 80K miles. Dealership stated issue not reproducible and not a recall; deferred further service if problem recurs. Owner concerned mileage would exceed 80K coverage window before next dealership visit.
Vehicle Rollback When Shut Off in Drive
When the engine is turned off via push button while vehicle is in Drive (not Park), the car rolls backward as if in Neutral. No mechanical lock engages. Represents a serious safety hazard if pedestrians or vehicles are behind the car.
When: Occurs when driver parks and shuts off engine without selecting Park
Symptoms owners cite: Vehicle rolls backward after engine shut-off in Drive; No engagement or lock in place; Behaves as if in Neutral
Recalls/TSBs owners mention: Acura corporate stated this is a known feature of the vehicle. Dealership confirmed it as expected behavior, not a defect.
Vehicle Rollaway on Incline
Vehicle parked on an incline rolled forward and struck a garage wall, causing injury to owner (fractured ribs, contusions). Dealership technician unable to diagnose cause. Vehicle was not repaired.
When: At 24,000 miles while parked on incline
Symptoms owners cite: Vehicle rolled forward on incline; Struck fixed object; Owner sustained injury
Repairs/costs cited: Dealership technician could not diagnose failure. Vehicle not repaired.
Recalls/TSBs owners mention: Manufacturer was made aware; no action taken or repair offered.
Power Trunk Malfunction
Automatic trunk lid falls rapidly, nearly trapping occupants' heads. Safety hazard during operation. Not caused by owner abuse or accident.
When: Unknown mileage
Symptoms owners cite: Trunk lid falls rapidly when opening; Risk of entrapment
Repairs/costs cited: Dealership demanded payment for new part despite no owner-caused damage.
Recalls/TSBs owners mention: Both dealership and Acura customer care refused to document as safety issue or cover repair; demanded owner payment for replacement part.
Synthesized from 10 NHTSA owner complaints — unverified consumer allegations, summarized for patterns. The verbatim filings appear below.
What owners are reporting 4 most recent
Torque converter shutter at speeds of 30mph - 45mph causing erratic acceleration fluctuations. I addressed the concern with the dealership at around 72,000 miles (just out of manufacturers warranty). I told there was a fluid recall. They changed the fluid which remedies the issue. The transmission fluid has to be changed every 5,000-10,000 for the vehicle to perform with a less noticeable…
Car started to drive 'jumpy', the local shop did diagnose a transmission issue about which Acura had a service bulletin- at low speed or at sudden acceleration car would drive uneven, interrupted; at constant hwy speed there would not be a problem; check engine light turned on emission system problem. Local shop did regular maintainence as the service light had turned on, diagnosed the fault in…
The Acura mdx 2015 can be turned off while in drive and the car rolls backwards as if in the neutral position. Pull into a parking space and forget to put the car in park, but push the engine start button to turn off the car. The car will roll backwards. The car does not lock into place. This is a serious safety concern if a person was behind the car they would get run over. The Acura…
Had powertrain trouble with your 2015 Acura MDX?
File a complaint with NHTSA → It's free, official, and how every report above got here — owner filings are the federal safety record this page is built on.
Common questions
How serious is the powertrain problem on the 2015 Acura MDX?
It's a meaningful issue. 10 complaints have been filed and the failure mode causes operational problems for owners. Repairs average $2,500.
At what mileage does the powertrain typically fail?
Based on the 10 complaints filed, powertrain issues most often appear around 56,300 miles. Some report problems earlier; some make it well past 150,000 with no symptoms. Maintenance habits matter — vehicles that received timely fluid services and were not regularly overworked tend to last longer.
What does it cost to fix?
Independent shops typically charge around $2,500 for powertrain repairs on this vehicle. Dealer pricing tends to run 20-40% higher. The exact figure depends on the specific failure mode, parts availability, and your local labor rates. If you're outside factory warranty, an extended service contract often covers this category.
Are there any recalls related to powertrain?
No active recalls currently cover powertrain issues on this vehicle. The complaints filed represent owner-reported failures that haven't risen to the level of a manufacturer-issued recall — but they're still worth knowing about before you buy or budget for repairs.
Related
Complaint and recall data sourced from the National Highway Traffic Safety Administration (NHTSA)
public records database. Verify the raw federal record at
nhtsa.gov/vehicle/2015/Acura/MDX.
Severity ratings are derived from reported crashes, fires, injuries, and fatalities. Repair cost estimates are
independent-shop national averages and may differ in your area. Some links on this page are affiliate links.