2015 Infiniti Q40 problems
The Infiniti G Line is a series of compact executive cars manufactured and marketed by Infiniti, a luxury division of Nissan, for the 1991–1996 and 1999–2016 model years — across four generations.
The first two generations of the Infiniti G (P10 and P11) were sedans based on the Nissan Primera. Beginning with its third generation (V35), the Infiniti G have been rebadged versions of the Nissan Skyline line of sedans and coupes that were exported to the United States and Canada. The fourth generation (V36) introduced the hardtop coupe convertible. The Nissan FM platform, used with the third and fourth generations (V35 and V36) of the Infiniti G, also underpins the Nissan 370Z and has shared components with the Infiniti M, Infiniti EX, and Infiniti FX.
Infiniti established a new naming convention beginning with the 2014 model year; all passenger cars are designated by the letter "Q," while sport-utility model names begin with "QX." The Infiniti G was to have been replaced by the Infiniti Q50, but the G37 was revived as the Q40 beginning with the 2015 model year.
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Common 2015 Infiniti Q40 problems
The 2015 Infiniti Q40 has been reported to have several common problems based on complaints from owners. Here are the details of these issues:
- Excessive Noise: Some 2015 Infiniti Q40 owners have reported excessive noise from the vehicle, which can be a sign of various mechanical issues. This problem might be due to worn-out parts, loose components, or even transmission issues. If not addressed promptly, excessive noise can lead to more severe problems and potentially compromise the safety of the vehicle.
- Vehicle Rolling Away: There have been complaints about the 2015 Infiniti Q40 rolling away, which is a significant safety concern. This issue could be attributed to a malfunctioning parking brake or a problem with the transmission. If the vehicle is left in gear or with the parking brake not properly engaged, it could potentially roll away and cause damage or injury.
- Transmission Unit Troubles: Transmission issues are a common problem in the 2015 Infiniti Q40. These problems can range from delayed engagement to complete transmission failure. Transmission issues can be caused by various factors, including low transmission fluid levels, worn-out parts, or manufacturing defects. If not addressed promptly, transmission problems can lead to more severe issues and potentially result in expensive repairs.
- Malfunctioning VDC (Vehicle Dynamic Control): The VDC system is designed to improve vehicle stability and control by adjusting engine output and applying brakes to individual wheels. However, some 2015 Infiniti Q40 owners have reported issues with the VDC system, which can lead to reduced vehicle control and safety. Malfunctioning VDC can be caused by various factors, including faulty sensors, wiring issues, or software problems.
It is important to note that these issues may not affect all 2015 Infiniti Q40 vehicles, and some owners may not experience any of these problems. However, potential buyers should be aware of these common issues and consider them when making a purchasing decision. Regular maintenance and inspections can help prevent or detect these problems early, potentially saving owners from more severe and expensive repairs.
How many miles can a 2015 Infiniti Q40 last?
With proper care and maintenance, an Infiniti Q40 should last upwards of 200,000 miles before it's time to consider replacing the vehicle. It's a solid option for a luxury vehicle.
When did Infiniti stop making Q40?
June 2015
As a result of this, the G37 sedan was renamed Q40 in 2014 when the brand continued the existing sedan as a lower-priced alternative to the all-new Q50, which had been introduced in 2013. Production continued until June 2015.
How much is a tune up for Infiniti Q40?
The average cost for Infiniti Q40 Engine Tune-Up is $206.
What engine is in a 2015 Infiniti Q40?
3.7 L V62015 INFINITI Q40 / Engine
The 2015 INFINITI Q40 features an advanced 3.7-liter VQ37HR V6 with VVEL rated at 328 horsepower and 269 lb-ft of torque.
2015 Infiniti Q40 car problems categorized by type of issue
After analyzing all complaints sent to the NHTSA and researching popular Infiniti Q40 problems, we found that the most common problems with these 2023 model year vehicles are:
- Unknown or other problems
- Air bags problems
- Structure problems
- Electronic stability control (esc) problems
The graph below shows statistics for all 2015 Infiniti Q40 vehicle components and the number of complaints received.
2015 Infiniti Q40 complaints
The NHTSA has received 7 complaints about various vehicle components related to the 2015 Infiniti Q40.
STRUCTURE PROBLEM
- Date Of Incident: 2024-08-18
- VIN: JN1CV6AR1FM
- Components: STRUCTURE
- Summary: The contact owns a 2015 Infiniti Q40. The contact stated while parked, a water leak coming from the driver’s side floor was discovered. The contact also noticed that there was an abnormal odor coming from inside the vehicle that became more pronounced with the A/C unit activated. The vehicle was taken to a dealer; however, a diagnostic test was pending. The vehicle was not repaired. The manufacturer was not notified of the failure. The failure mileage was 100,328.
UNKNOWN OR OTHER PROBLEM
- Date Of Incident: 2019-10-10
- VIN: JN1CV6AR3FM
- Components: UNKNOWN OR OTHER
- Summary: THE CAR WHEN PARKED ON A STEEP SLOPE WITH THE EMERGENCY BRAKE/PARKING BRAKE ON WILL START TO ROLL ON ITS OWN. INFINITI WAS CONTACTED AND BLAMED MY DRIVEWAY AS THE PROBLEM BUT I HAVE 6 CARS AND THE INFINITI IS THE ONLY CAR THAT CANT STAY PARKED AND ROLLS WHEN PARKED. WAS TOLD ID HAVE TO PAY 3 THOUSAND DOLLARS IF I WANTED MY CAR TO GET CHECKED. *TR
AIR BAGS PROBLEM
- Date Of Incident: 2019-09-27
- VIN: JN1CV6APXFM
- Components: AIR BAGS
- Summary: SINCE I BOUGHT CAR THE PASSENGER "AIR BAG OFF" LIGHT IS ALWAYS ON WHENEVER MY WIFE, WHO WEIGHS 165 LBS, IS A PASSENGER - SHE DOES NOT HAVE AIRBAG PROTECTION. WE NORMALLY DO NOT HAVE A PASSENGER IN THE FRONT SEAT, AND NEVER EVEN KNEW IF THAT WAS AN OPTION UNTIL MY WIFE JUST SAT IN THE PASSENGER SEAT AND POINTED IT OUT TO ME. THIS IS WHILE SHE WAS SITTING WITH THE SEAT BELT WHILE THE CAR WAS MOVING AT ANY SPEED.
UNKNOWN OR OTHER,ELECTRONIC STABILITY CONTROL (ESC) PROBLEM
- Date Of Incident: 2019-07-28
- Crash: 1
- VIN: JN1CV6AP3FM
- Components: UNKNOWN OR OTHER,ELECTRONIC STABILITY CONTROL (ESC)
- Summary: WHILE IN MOTION ON A HIGHWAY THE VDC (AUTO HYDROPLANE CORRECT FUNCTION) IS SUSPECTED TO HAVE CAUSED INCREASE LOSS OF CONTROL OF VEHICLE. I WAS ABLE TO OBSERVE THAT THE VDC LIGHT WAS FLICKERING ON AND OFF. IT DID INITIALLY COME ON TO AUTO CORRECT BUT THEN ABRUPTLY THE VEHICLE STARTED TO HYDROPLANE, DESPITE THE FUNCTION BEING ON AND CAUSED ME TO HAVE TO DIVERT INTO A GUARDRAIL...
AIR BAGS PROBLEM
- Date Of Incident: 2017-06-22
- VIN: JN1CV6APXFM
- Components: AIR BAGS
- Summary: THE PASSENGER AIRBAG OFF LIGHT STAYS ON WHILE AN ADULT WEIGHTS MORE THAN 120 POUND SITTING ON THE PASSENGER SEAT. THE LIGHT WON'T GO OFF WHILE THE CAR IS MOVING.
UNKNOWN OR OTHER PROBLEM
- Date Of Incident: 2015-05-28
- Number Of Injuries: 1
- VIN: JN1CV6AR7FM
- Components: UNKNOWN OR OTHER
- Summary: I BOUGHT THIS NEW 2015 INFINITI Q40 AWD FROM INFINITI DEALER ON FEB 28, 2015. AFTER DRIVING THIS NOISY CAR FOR THREE MONTHS(3000MILES), I STARTED HAVING RINGING IN BOTH EARS (TINNITUS). I HAVE TROUBLE TO SLEEP AND START LOSING MY HEARING IN BOTH EARS. I HAVE CONTACTED THE INFINITI DEALER IN JUNE 2015, THE FIRST TIME I NOTICED THE TINNITUS CAUSED BY THE LOW FREQUENCY NOISE( RANGE FROM 100-400HZ ACCORDING TO THE ANALYSIS FROM ADOBE AUDITION CC SOFTWARE). THE NOISE BECAME NOTICEABLE WHEN REACH 35 MPH ON BOTH LOCAL AND HIGHWAY ROAD. THEY REFUSED TO TAKE THE CAR BACK TO INVESTIGATE THE PROBLEM AND CLAIMED THAT IT'S NORMAL CAR NOISE. I TOOK MY DOCTOR'S SUGGESTION TO WEAR EARPLUGS WHEN DRIVING THIS Q40 SINCE THEN. AFTER ANOTHER 6 MONTHS OF DRIVING (TOTAL MILEAGE IS 11,000MILES NOW), THE TINNITUS AND MY HEARING DIDN'T GET BETTER. I CONTACTED THE CAR MAKER AGAIN IN DEC 2015. AFTER A SECOND ROAD TEST, INFINITI STILL CLAIMS IT'S THE NORMAL NOISE. THEY REFUSED TO GIVE ME FULL REFUND WITH THE COMPENSATION TO THE HEALTH DAMAGE ON ME. WITH NO CONCERN ON THE FACT THAT THIS NOISE ALREADY CAUSED SEVERE AND PERMANENT HEALTH DAMAGE TO THE CUSTOMER, INFINITI REFUSED TO RECALL THE CARS AND INVESTIGATE THE POTENTIAL HARM OF THE LOW FREQUENCY NOISE TO THE CUSTOMERS. 8574 OF INFINITI Q40 WERE SOLD IN U.S. SINCE JAN 2015 ( INFINITI SALES STATS: HTTP://WWW.GOODCARBADCAR.NET/2011/01/INFINITI-G-SALES-FIGURES.HTML). ALL THESE CUSTOMERS MAY SUFFER FROM THE SAME NOISE. SOME OF THEM MAY HAVE FAMILY MEMBERS RIDING WITH THEM, INCLUDING CHILDREN. THE PUBLIC SHOULD BE ALERTED THAT THERE IS POTENTIAL RISK TO DRIVE THIS CAR, FOR BOTH THE CURRENT Q40 OWNERS AND THE POTENTIAL BUYERS.
AIR BAGS PROBLEM
- Date Of Incident: 2013-04-09
- VIN: JN1CV6AP4FM
- Components: AIR BAGS
- Summary: SINCE I BOUGHT CAR AT 96 MILES AND NOW AT 3000 MILES THE PASSENGER "AIR BAG OFF" LIGHT IS ALWAYS ON WHENEVER MY WIFE, WHO WEIGHS 105 TO 109 LBS, IS A PASSENGER - SHE DOES NOT HAVE AIRBAG PROTECTION. I TOOK CAR TO THE SERVICE DEPARTMENT OF TWO INDEPENDENT DEALERSHIPS 4 MONTHS APART..THEY BOTH KEPT IT OVERNIGHT, TESTED IT "THOROUGHLY." THEIR RESPECTIVE SERVICE MANAGERS SAID THAT THE AIR BAG MET ALL SPECIFICATIONS AND THAT THEY "CANNOT ADJUST SINCE IT IS SET AT THE FACTORY" I WAS REFERRED TO INFINITI REGIONAL OFFICE AND THEIR REPRESENTATIVE SAID THE SAME THING, BUT HE ADDED THAT GIVEN HER WEIGHT IF THE AIR BAG DID DEPLOY IT WOULD "BE LIKE A LETHAL WEAPON." I JUST READ ABOUT THE NISSAN "BAG LIGHT RECALL" IN TODAY'S PAPER. I AM VERY UNEASY...UPDATED 10/01/15*BF
Negative 2015 Infiniti Q40 car reviews
Positive 2015 Infiniti Q40 car reviews
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I hope this message finds you well. I wanted to share some feedback on the car. While I think it's a decent car, I believe there is room for improvement in terms of the instruments on the inside. It could be much better. Additionally, I found it to be quite expensive. Thank you for your attention to this matter.
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I can tell you, I absolutely love it! My car doesn't hold me back at all, and with its powerful and stable engine in curves, it never fails me.
Additional sources
More sources of information about 2015 Infiniti Q40 problems:
I have a 2015 Q40 with 60k miles. How long can I hope the car is ...
Jun 13, 2023 ... I know it can be a crap shoot, but with good maintenance and some luck, any idea how long it will go without any major issues? Thanks .
The Infiniti Q40 Years To Avoid - CoPilot
Nov 14, 2023 ... Excessive noise; Vehicle rolling away; Troubles with the transmission unit; Malfunctioning of the VDC. These were some of the most common issues ...
Infiniti Q40. Anyone knows what the problem is? : r/infiniti
Jun 27, 2022 ... Did they say output speed sensor? Code P0720? Possibly needs a transmission valve body if so.
2015 INFINITI Q40 Problems | Kelley Blue Book
How reliable is the 2015 INFINITI Q40? See the most common repairs performed and learn if your vehicle is at risk for major repairs in the next 12 months.
2015 INFINITI Q40 Repair: Service and Maintenance Cost
Get 2015 INFINITI Q40 repair and maintenance costs, common problems, recalls, and more. Find certified INFINITI mechanics near you.
Other years of Infiniti Q40
Are you having problems with your 2015 Infiniti Q40?
Isaias Romaguera 2024-05-13
I have owned my 2015 Q40 for almost 2 years now. While it has a good amount of power and is quick, I have been disappointed with my purchase. Despite being touted as a luxury vehicle, the interior is cheap with plastic everywhere and everything squeaks and seems to be falling apart. The technology in the car is outdated and the gas mileage is abysmal. I do about a 50/50 mix of highway/city and I have never exceeded 15.5MPG. However, I believe that Infiniti can improve their dealer network and support from Infiniti USA. If you are looking for a true luxury vehicle and experience, there are other luxury brands that may offer a better product for a better price.
Marco Wisoky 2024-02-16
I purchased my 2015 Infiniti Q40 AWD from Beshoff Infiniti (San Jose) on Feb 28, 2015. After driving the car for three months, or about 3000 miles, I began experiencing ringing in both ears (tinnitus). The ringing became more and more noticeable after driving the Q40, and it has been affecting my sleep. I have also noticed a loss of hearing in both ears, especially for low voices in group meetings or in noisy environments, or when speaking with someone who has a bass voice on the phone. I contacted Beshoff Infiniti in June 2015 when I first noticed the tinnitus caused by the noise. Although they refused to take the car back with a full refund, they did offer some suggestions. I took my doctor's advice and started wearing earplugs when driving the Q40. After another 6 months of driving (total mileage is now 10,000 miles), the tinnitus and my hearing did not improve, and it has been affecting my life and work. I contacted the dealer and the car maker again this month, but they asked me to do a second road test and still claimed that it's normal road noise. However, this noise is causing me a lot of discomfort and I don't think I can continue driving this car. Despite the dealer and Infiniti refusing to help me with the problem, I did some noise tests and analysis myself to figure out what's going on. According to the results from Adobe Audition CC, a professional audio analysis software, the noise mainly comes from 100-400 Hz, which is low frequency noise not sensitive to human beings. This means that even if the driver doesn't hear the noise, the energy carried by these sounds can still damage the auditory nerve cells without immediate impact. The low frequency noise of this Q40 AWD carries much higher energy than another model made by Infiniti, the Q50, at this range.This indicates that the company has the technology and capability to reduce the noise, but they did not apply it to Q40 for some reason. I am currently negotiating with the Infiniti regional affairs manager. Infiniti claims that it's normal noise and, as it's not a defect on any part of the vehicle, they cannot repair it or give a full refund as I requested, nor can they compensate me for the health damage caused. Despite the fact that this noise has already caused severe and permanent health damage to the customer, Infiniti refuses to recall the cars and investigate the potential harm of the noise to the customers. It can be difficult for individuals to negotiate and reach a desired outcome with a large company. So far, a total of 8574 Infiniti Q40s have been sold in the US since January 2015 (Infiniti sales stats: http://www.goodcarbadcar.net/2011/01/infiniti-g-sales-figures.html, sales dropped from 1000 to 38 by November 2015). All these customers may suffer from the same noise. Some of them may have family members riding with them, including children. As a Ph.D. in Biology, I am aware that the auditory nerve cells are the only type of cell that cannot regenerate in the human body. Once you lose your hearing, it's lost permanently. The public should be alerted that there is potential risk in driving this car, for both current Q40 owners and potential buyers. If you are a current owner of this model of Infiniti Q40 and have the same problem, please contact Infiniti regional affairs. You can reach them through live chat: http://nna.force.com/livechat/LiveAgent_NewInfinitiIFS?routingGroup=InfinitiGlobalNavhttp://www.infinitiusa.com/iapps/contactusInfiniti Consumer AffairsP.O. Box 685003Franklin, TN 37068-5003Phone: 800-662-6200Monday through Saturday:7:00 AM to 7:00 PM CTTwitter contact for customer support or questions: @InfinitiCare
Jimmie Ryan 2024-01-06
You sold it to Carmax for 12k. It's lowered on swift springs and has 5% tint on the doors and 35% on the front. It also has a Tomei exhaust with a YSR Y pipe. It's a shame that someone put a dent on the roof during the transition. It's too bad that you don't have your stock exhaust anymore. I know you miss that Tomei!