2018 Mazda MAZDA3 Fuel system Problems
- Complaints
- 11about this part
- Share
- 10%of 110 total for the year
- Median mileage
- 64,500miles
- Trend
- Not enough dataFewer than 15 complaints, too few for a reliable trend.
NHTSA recorded 11 complaints about the fuel system of the 2018 Mazda MAZDA3, 10% of the 110 complaints for this model year. Where a mileage was given, the median is 64,500 miles. 1 recall campaign on record is filed under a similar system.
Fewer than 15 complaints name this part, so treat the figures as a rough indication only.
Example complaints
Selected from NHTSA records; personal details are removed. They are consumer reports, not findings.
“When I let off of the accelerator it still maintains the speed it was going before I let off the accelerator. The dealer told me that's how its design. He even took it for a ride and said see it still keeps the speed I said its not cruise control. I had contacted the dealer and mazdausa. Mazdausa ignores me. I just need to get this fixed before someone gets hurt. When I go to pass it stays for a while at the speed I hit before I release the accelerator.”
NHTSA complaint #11111681, filed 2018-07, 34 miles“I was driving my car and it suddenly jerks a few times and the engine light turns on. i slowed down and then began to accelerate, and it was losing power and wouldn’t t go above 40mph - even while flooring the gas pedal. Now it won’t start at all. the lights turn on and everything else is fine, but car won’t start and after checking CEL, i’m getting the code p0192 indicating it’s Fuel Rail Pressure Sensor Low Input.”
NHTSA complaint #11523583, filed 2023-05“I have a 2018 Mazda 3 hatchback 2.5l with a faulty fuel pump. I bought the car 1 year old with 2k mikes on it in 2019 from Jake Sweeney Mazda in Cincinnati ohio. They tell me the issue with power loss and stalling I need a new fuel pump it's failing cost is $1600 to repair. Then I learn a few days later on my own 121,000 2018-2109 Mazda 3 and others were recalled due to a faulty fuel pump with the exact problem I have manufactured by Denso. But I'm told my vin # isn't on the recall. The Denso fuel pump is the brand. …”
NHTSA complaint #11529167, filed 2023-06“I was parked in a downtown garage, and the vehicle would not start after many attempts, after about 45 minutes of trying (waiting 5 minutes between tries). The engine would turn normally and sounded like it was trying to start, but didn't fully engage. It finally did after 45 mins, and I drove it to the local Mazda dealer in Honolulu. I noticed the check-engine light was on at that time (but not before the incident). They ran a diagnosis, and couldn't replicate the issue, and said it may be a battery problem with low voltage, due to the engine's error codes. …”
NHTSA complaint #11616920, filed 2024-09“The contact owns a 2018 Mazda Mazda3. The contact stated that while driving uphill at 45 MPH, the vehicle sputtered, hesitated to accelerate, and the check engine warning light illuminated. When the contact firmly depressed the accelerator pedal, the engine made a knocking noise, and the vehicle stalled. Diagnostic testing at AutoZone retrieved DTC related to the knock sensor. The vehicle underwent a tune-up, and the knock sensors and ignition coils were replaced; however, the failure persisted. While driving, the vehicle hesitated and failed to exceed 40 MPH. …”
NHTSA complaint #11770853, filed 2026-10, 100,000 milesRelated recalls
- 21V875000Nov 12, 2021Mazda North American Operations (Mazda) is recalling certain 2018 Mazda3, Mazda6, 2019 CX-3, 2018-2019 MX-5, CX-5, CX-9, and 2019-2020 Mazda2 vehicles. The…Covers: Mazda MAZDA3 2018, CX-9 2018–2019, CX-5 2018–2019 +4 more
Related service bulletins
- 11032019Apr 11, 2026This Service Alert supersedes the previously issued M-Tip(s) listed below. The changes are noted in Red text. MT-003/22 03/02/22 DESCRIPTION Some customers may complain about a…
- 11011341Nov 18, 2024CUSTOMER SERVICE PROGRAM CSP12 - DENSO LOW-PRESSURE FUEL PUMP CUSTOMER SERVICE PROGRAM WARRANTY EXTENSION: Attention ALL Mazda Dealers: This is a Warranty Extension and not a…
- 11011338Nov 18, 2024CUSTOMER SERVICE PROGRAM CSP12 - DENSO LOW-PRESSURE FUEL PUMP CUSTOMER SERVICE PROGRAM WARRANTY EXTENSION: Attention ALL Mazda Dealers: This is a Warranty Extension and not a…
- 11011336Nov 18, 2024CUSTOMER SERVICE PROGRAM CSP12 - DENSO LOW-PRESSURE FUEL PUMP CUSTOMER SERVICE PROGRAM WARRANTY EXTENSION: Attention ALL Mazda Dealers: This is a Warranty Extension and not a…
- 11011331Nov 12, 2024CUSTOMER SERVICE PROGRAM CSP12 - DENSO LOW-PRESSURE FUEL PUMP CUSTOMER SERVICE PROGRAM WARRANTY EXTENSION: Attention ALL Mazda Dealers: This is a Warranty Extension and not a…
- 11011345Nov 8, 2024CUSTOMER SERVICE PROGRAM CSP12 - DENSO LOW-PRESSURE FUEL PUMP CUSTOMER SERVICE PROGRAM WARRANTY EXTENSION: Attention ALL Mazda Dealers: This is a Warranty Extension and not a…
- 11011326Nov 8, 2024CUSTOMER SERVICE PROGRAM CSP12 - DENSO LOW-PRESSURE FUEL PUMP CUSTOMER SERVICE PROGRAM WARRANTY EXTENSION: Attention ALL Mazda Dealers: This is a Warranty Extension and not a…
- 10209728Mar 2, 2022Some customers may complain about a tapping or knocking noise coming from the rear seat after fuel fill. The concern will likely occur if the fuel tank is overfilled (more fuel…
- 10202695Oct 13, 2021Ethanol is becoming a common additive in gasoline. Gasoline containing ethanol is likely available at your local gasoline station. Typical blends of ethanol include E10 and E85…
Fuel system: other model years
| Year | Complaints | Share of year |
|---|---|---|
| 2021 | 2 | 4% |
| 2020 | 2 | 6% |
| 2019 | 8 | 11% |
| 2018 | 11 | 10% |
| 2017 | 3 | 4% |
| 2016 | 6 | 6% |
| 2015 | 14 | 11% |
| 2014 | 24 | 17% |
| 2013 | 2 | 2% |
| 2012 | 22 | 10% |
| 2011 | 3 | 2% |
| 2010 | 7 | 1% |
| 2009 | 5 | 4% |
| 2008 | 9 | 3% |
| 2007 | 9 | 4% |
| 2006 | 4 | 2% |
| 2005 | 6 | 6% |
| 2004 | 7 | 5% |
Other parts of the 2018 Mazda MAZDA3
30 complaintsOther or unknown
26 complaintsBack-over prevention (rear camera)
16 complaintsVisibility (wipers, defrost, mirrors)
16 complaintsEngine
12 complaintsBrakes
6 complaintsForward collision avoidance
5 complaintsTransmission and drivetrain
5 complaintsLane departure
4 complaintsEngine cooling
2 complaintsSteering
2 complaintsBody and structure
2 complaints
← All problems reported for the 2018 Mazda MAZDA3
About this data. Data from NHTSA (ODI) complaints, recalls, TSBs and investigations, updated Oct 27, 2026. Complaints are unverified consumer reports and may be duplicated or inaccurate.
To check a specific vehicle for open recalls, use its VIN at nhtsa.gov/recalls. Methodology