This bulletin supersedes the previously issued bulletin(s) listed below. The changes are noted in Red. 01-008/23 06/05/23 Some vehicles may exhibit rattling noises from the engine compartment and oil leakage from the drive belt auto tensioner. This may be caused by insufficient sealing at the drive belt auto tensioner damper when the auto tensioner fully operates under both high ambient temperature and high load conditions. To eliminate this concern, the shape of the drive belt auto tensioner damper has been changed. REPAIR PROCEDURE If the tensioner is found to be "No Good" after completing the Drive Belt Auto Tensioner Inspection, replace it with a modified part according to the instructio
full bulletin at NHTSA ↗2017 Mazda CX-5 powertrain problems
moderate Owners of the 2017 Mazda CX-5 have filed 11 NHTSA complaints about the powertrain at roughly $2,500 to repair (U.S. federal records, as of July 2026). Source: NHTSA Office of Defects Investigation. See powertrain across all vehicles →
Complaints
11
Recalls
0
Avg fix
$2,500
| Model year | powertrain complaints |
|---|---|
| 2013 CX-5 | 35 |
| 2014 CX-5 | 49 |
| 2015 CX-5 | 19 |
| 2016 CX-5 | 49 |
| 2017 CX-5 (this page) | 11 |
| 2018 CX-5 | 17 |
| 2019 CX-5 | 29 |
| 2020 CX-5 | 8 |
| 2021 CX-5 | 15 |
Is there a fix? Manufacturer service bulletins
The manufacturer has issued service bulletins covering powertrain on this vehicle — documented repair instructions, service campaigns, or warranty extensions sent to dealers. A TSB isn't a recall (it's not a free safety remedy), but it's the manufacturer acknowledging the issue and how to fix it.
This Service Alert supersedes the previously issued SA listed below: The changes are noted in Red. SA-011/24 02/12/24, 06/06/24, 07/29/24 DESCRIPTION Mazda has developed factory recommended scheduled maintenance services that support all major vehicle systems. Mazda recommends dealers follow the scheduled maintenance tables as cited in the vehicle-specific workshop manual or owner's manual. Services performed outside of Mazda's factory scheduled maintenance are not recommended. These services are unnecessary and create unneeded expenses for your customers. SCHEDULED MAINTENANCE Refer to the applicable Workshop Manual or Owner's Manual for vehicle -specific manufacturer scheduled maintenance.
full bulletin at NHTSA ↗When inspected, the differential or PTO oil is dark or black. This is considered normal and NO repair should be performed. During production, differential ring and pinion gears receive a manganese phosphate coating (commonly referred to as black oxide). This coating forms a porous, oil-retentive surface that improves boundary lubrication and reduces adhesive wear during initial contact cycles. Designed as a sacrificial layer, it is gradually removed under load throughout the break-in process. As a result, after the first few hundred miles, or at the initial gear oil service interval, the lubricant may appear darkened by the worn-off coating. It will contain trace ferrous particles from the n
full bulletin at NHTSA ↗Noise, Vibration, and Harshness (NVH) Diagnostic Guidelines Diagnostic Guidelines When diagnosing NVH concerns, it is essential to first classify the issue into one of three primary categories: Noise, Vibration, or Harshness. Many customer complaints may involve overlapping symptoms, such as both noise and vibration, so identifying the dominant characteristic is critical. Once the primary symptom is determined, follow the appropriate diagnostic path. For example, if a concern includes both noise and vibration but is related to vehicle speed, the vibration diagnostic path should be followed. When considering component replacement during the diagnostic process, it is best practice to start wit
full bulletin at NHTSA ↗Some customer's might state that they notice fluid or oil leaking/dripping on the ground when the vehicle is parked. For this concern, inspect the vehicle for any trace of a fluid or oil leak and use the following examples as a guide to determine if it is severe enough to require a repair, or just to clean the area and monitor it at the next service. Examples of residue or seepage that may not be considered a leak and that may not require repair based on splash shield inspection.
full bulletin at NHTSA ↗Source: NHTSA manufacturer communications. Bring the bulletin number to your dealer or shop.
The failure pattern owners describe
Owners of the 2017 Mazda CX-5 report multiple powertrain failures, the most consistent being rear differential wear. Five separate complaints describe identical symptoms—metal in the oil, loud clanking, seal leaks, and axle play—at 65k to 97k miles. All occurred outside the 5-year/60k-mile warranty, costing $4k to $4.4k to repair. One owner filed a complaint claiming the part should not wear out at that mileage on a new vehicle; Mazda denied coverage.
One owner experienced two separate, identical incidents of complete power loss while driving at 15k and 63k miles. Both triggered a P0192 code (fuel pump sensor), and the dealer replaced the high-pressure fuel pump both times despite not reproducing the fault and the vehicle running normally when it arrived. The owner says the root cause was never found.
A handful of complaints describe transmission jerking during deceleration, particularly at 25 mph, with one requiring a full transmission replacement and another worsening over time. One owner reported unexpected acceleration twice while parking in 2018, avoiding collision only by hard braking. Another complaint notes the shift lock lever sticking when cold. None of these latter issues have repair confirmation or clear diagnosis.
Same Mazda CX-5 powertrain reports on nearby years: 2014 · 2015 · 2016 · 2018 · 2019
Failure modes owners describe
High-pressure fuel pump / fuel delivery failure
Complete loss of engine power while driving, engine stalls without warning, vehicle loses power steering and brakes assistance. Vehicle fails to restart for extended periods. Recurrence at different mileage intervals on the same vehicle.
When: At 15,000 miles and again at 63,000 miles; incidents occurred during highway driving
Symptoms owners cite: Sudden complete loss of power while driving; Engine stall without warning; Power steering loss; Power brakes loss; Engine would not restart for 30+ minutes; Later restart and normal operation once restarted
Codes mentioned: P0192
Repairs/costs cited: High-pressure fuel pump replaced at dealership both times despite inability to reproduce problem
Rear differential wear and failure
Premature wear of gears inside rear differential, resulting in leaking seals, play in axles, and catastrophic internal damage. Occurs well within typical service life at relatively low mileage, consistently out of warranty coverage. Multiple owners report identical failures with no prior warning indicators.
When: 65,000 to 97,000 miles on vehicles with 5-8 years of ownership
Symptoms owners cite: Rear differential fluid leak; Play in both left and right axles; Loud clanking noises from inside differential; Increased highway noise (reported by one owner); Metal particles in differential oil; Abnormal sound from rear of vehicle while parked; No warning lights or messages before failure
Repairs/costs cited: Requires complete rear differential replacement; costs reported as $3,993 to $4,400; typically discovered out of warranty (5yr/60k coverage)
Recalls/TSBs owners mention: Mazda declined coverage citing warranty expiration; no recall issued
Transmission jerking and hard shifts
Transmission jerks or shudders during deceleration and at specific vehicle speeds, with no prior warning. One report required complete transmission replacement; another owner reports worsening condition that interferes with driving.
When: Unspecified mileage; incidents during normal city and highway driving
Symptoms owners cite: Transmission jerk when slowing to 25 mph; Sudden jerking while driving at 45 mph that caused sudden stopping; Condition worsens over time; Jerking distracts from driving
Repairs/costs cited: One dealer diagnosed as transmission failure requiring complete transmission replacement; no other repair details provided
Unexpected acceleration
Vehicle accelerates unexpectedly without driver input, occurring both during forward motion and while parking. Owner avoided collisions by braking hard; one minor contact with another vehicle occurred.
When: Two separate incidents, approximately one month apart in 2018
Symptoms owners cite: Unexpected acceleration while parking in reverse; Unexpected acceleration while parking forward on city street; No indication of cause
Shift lock lever sticking when cold
Transmission gear selector shift lock lever gets stuck in cold weather conditions, affecting ability to shift out of park.
When: Cold weather conditions
Symptoms owners cite: Shift lock lever becomes stuck when cold
Synthesized from 11 NHTSA owner complaints — unverified consumer allegations, summarized for patterns. The verbatim filings appear below.
What owners are reporting 0 most recent
Had powertrain trouble with your 2017 Mazda CX-5?
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 2017 Mazda CX-5?
It's a documented issue but not catastrophic. 11 complaints have been filed. Repairs average $2,500 and most owners catch it before it causes a breakdown.
At what mileage does the powertrain typically fail?
Based on the 11 complaints filed, powertrain issues most often appear around 26,645 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/2017/Mazda/CX-5.
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.