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Fuel economy of the 2018 Hyundai Elantra. 1984 to present Buyer's Guide to Fuel Efficient Cars and Trucks. Estimates of gas mileage, greenhouse gas emissions, safety ratings, and air pollution ratings for new and used cars and trucks.

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• November 30: Hyundai Panoramic Sunroof Settlement is Finalnews | 9 days ago
• November 22: Hyundai Palisade Recall Will Protect Side Curtain Airbagsrecalls | 17 days ago
• November 7: Hyundai and Kia Power Window Lawsuit Filed in Californianews | 32 days ago
• October 23: Hyundai Elantra and Ioniq Hybrid Wheels May Detachrecalls | 47 days ago
• October 23: Hyundai Recalls Elantra Cars At Risk of Stability Problemsrecalls | 47 days ago

2018 Hyundai Elantra

2018 Hyundai Elantra Owner Comments

problem #13

Elantra

• 29,000 miles

Car continuously says it overheating. First trip to dealership could replicate the issue. Second trip a month later. Replaced head gasket due to leak and exhaust pipe. Currently sitting in it waiting for roadside assistance. Still overheating not even a week later also now putters and shakes when I try to start it.

- Gallow, OH, USA

problem #12

Elantra

• 59,000 miles

The contact owns a 2018 Hyundai Elantra. The contact stated that when the driver attempted to drive on an incline, the vehicle stalled several times. The vehicle was taken to an unknown dealer where metal shavings were found in the engine. The dealer also test drove the vehicle and was able to recreate the failure. The dealer advised that the engine needed to be replaced. The vehicle was not repaired. The manufacturer was contacted and stated that the vehicle was not included in NHTSA campaign number: 15V568000 (engine). The approximate failure mileage was 59,000.

- North Hollywood, CA, USA

problem #11

Elantra

• 12,000 miles

My Hyundai Elantra brake pedal flutters when I press it to stop giving off a loud noise and doesn't allow me to brake at times. I've taken it to the dealer but they say no issues have been found. What can I do. I'm concerned the prior recall on the the 2017. Here is the link. Https://www.cars.com/articles/recall-alert-2017-Hyundai-Elantra-1420693395015/. also, while driving the car seemed to stall.

- Conyers, GA, USA

problem #10

Elantra

• 380 miles

A D V E R T I S E M E N T S

When accelerating with moderate to heavy throttle input, the engine emits excessive pinging and rattles noises. It sounds like 'spark knock'. no matter what brand of fuel or octane I run the car on, the engine makes these pinging and rattling noises. I've brought the car to the dealership service dept. Twice so far to address this concern. I was informed the first time that they hear the noise, but cannot diagnose it because the check engine light isn't illuminated. On the second visit, they told me it is a normal noise for the car. Having owned a handful of vehicles over the years, this noise is indicative of spark knock. If the problem is indeed excessive spark knock, this can lead to catastrophic engine failure, causing sudden loss of all power. After researching the issue online and speaking with other owners, it is apparent to me that it is a fairly common problem with the 2018 Hyundai Elantra sedan. I would like Hyundai to investigate this issue and come up with a fix. This problem has existed since brand-new off the dealer lot. The car currently has approximately 4,000 miles.

- Jacksonville, FL, USA

problem #9

Elantra

• 11,000 miles

I bought the car brand new with 20 miles. I am the only owner. When I bought I noticed the acceleration issue. I informed the dealer 10 days owning it there is an issue on the acceleration. I press gas I can hear the noise on engine as if I was pressing gas and the car is on park. It happened again right before the first maintenance. They assured me they checked it and everything was fine. I was recently on the highway I was driving but I had to slow down due to traffic. When speed picked up I tried to pick up speed and again hit the gas peddle and the car was'nt moving

- Ridgewood, NY, USA

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problem #8

Elantra

• 35,000 miles

Car sputters at idle, acting like it's going to cut off. Does not accelerate properly, but only intermittently. One day, the check engine light came on and I could not accelerate and it would sputter at lights. Drove it straight to advance to get the engine light checked; nothing came up. Started the car again and it drove fine, like nothing had happened. Took it to the dealership the next day. They couldn't duplicate the issue. Finally, after letting it idle awhile, were able to get a code on the coils. Replaced them all. Car was running fine after that. The sputtering at idle has now started again.....less than 2 months later.

- Williamsburg, VA, USA

problem #7

Elantra

• 3,800 miles

Does not heat up quickly enough in cold temps. It took 15 minutes at 38 deg Fahrenheit, city driving before the temp gage showed normal operation temp.

- Rockford, IL, USA

problem #6

Elantra

• 3,400 miles

The contact owns a 2018 Hyundai Elantra. While driving various speeds, the vehicle stalled without warning. The contact stated that the vehicle would not accelerate intermittently when the contact depressed the accelerator pedal. Also, when the steering wheel was turned left or right, it vibrated. The vehicle was taken to several dealers including tony Hyundai waipahu (94-1299 ka ulka blvd, waipahu, hi 96797), but was not diagnosed or repaired. The manufacturer was contacted, but did not assist. The vehicle was not diagnosed or repaired. The failure mileage was 3,400.

- Honolulu, HI, USA

problem #5

Elantra

• 1,672 miles

On 10/13/2018 I turned ignition on car to start and the car began rumbling and bumping and the shut down and the check engine light came on. I was stationary in my parking space at home when this happen...it also began bumping and dragging if to shut down again on 10/20/2018. Each time car was taken to dealership..next, the instrument panel when blank while driving on 10/20/2018. Now this time it was driven to dealer, they could not duplicate the mal function. This was on 10/23/2018 and 10/29/2018 at lynnes Hyundai..on 10/16/2018 vechicle was towed to hudson Hyundai for the same bumping. They said the tech found a shortage ignition coil and a cylinder misfired and he cleared the codes. Coming home from lynnes on 10/29/18 after they said they could not find anything wrong with car, it began to rumble again. I am not comfortable driving this car. What if your in high speed traffic and it shuts down and your instrument panel goes black.could be a tragedy, if not someone's death

- East Orange, NJ, USA

problem #4

Elantra

• 2,200 miles

Vehicle took twelve minutes to clear frost from windows at 30 degrees Fahrenheit. Vehicle was stationary in parking lot at idle. Vehicle started to show sighs of defrost at six minute mark. Vehicle was drove one mile after clearing of windows and never went above first make on engine temperature gauge.

- Filer, ID, USA

problem #3

Elantra

• 6,400 miles

A D V E R T I S E M E N T S

Engine noise became very loud over several days; took to dealership which told me a weld in the exhaust piping system had failed and that the exhaust pipe had broken open. They said it was not safe to drive because of potential for exhaust coming into cabin, ordered the part and gave me a loaner, on 10/2, saying the earliest I could reasonably expect to have my car back would be 10/18.

- Norfolk, VA, USA

problem #2

Elantra

• 450 miles

I was driving on the highway at night when the 'engine has overheated' warning came on, after which I managed to make it to a local road near before the car stalled. I had it towed to a Hyundai center the next day, where they told me I had a transmission fluid leak and they fixed the issue. Today, less than a week later, I was driving and about to go on the freeway when the 'engine has overheated' warning came on again. I felt like it would be too dangerous to continue driving in case the car stalls again at night on a freeway, and am waiting on a response from Hyundai to either fix or replace the car.

- Irvine, CA, USA

problem #1

Elantra

• 2,200 miles

Car has intermittent problem with acceleration. Will go into a fail safe mode, wont accelerate past 40-60 mph. I have had very close call on multiple accidents due to the fact I am unable to accelerate. My car lost power and could not pick up speed at all. This is a major safety issue and the car dealership will not help me.

- Kailua, HI, USA

1. Hyundai »
2. Elantra GT »
3. 2018 »

• switch makes
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Print this page

• November 30: Hyundai Panoramic Sunroof Settlement is Finalnews | 9 days ago
• November 22: Hyundai Palisade Recall Will Protect Side Curtain Airbagsrecalls | 17 days ago
• November 7: Hyundai and Kia Power Window Lawsuit Filed in Californianews | 32 days ago
• October 23: Hyundai Elantra and Ioniq Hybrid Wheels May Detachrecalls | 47 days ago
• October 23: Hyundai Recalls Elantra Cars At Risk of Stability Problemsrecalls | 47 days ago

34 Technical Service Bulletins (TSBs)

TSB List for the 2018 Hyundai Elantra GT

The TSB information displayed below are summaries. Unfortunately we do not have access to the full versions. To get full information about a particular TSB, write down the TSB title & date, & either contact your local dealer or click on the links below.

STEERING

• TSB #19-ST-001H

  NHTSA ID #10160106

  Summary: This bulletin provides information regarding replacement of the column-mounted Motor Driven Power Steering (MDPS) system as separate components.

ENGINE (PWS)

• TSB #5NP-P4Y7D-08

  NHTSA ID #10143794

  Summary: If you are servicing an applicable vehicle with a ?Check Engine Light on? and one or more of the DTC listed below, follow the repair procedure and replace the input/output speed sensor and oil pressure harness.

ENGINE AND ENGINE COOLING

• TSB #19-01-016H

  NHTSA ID #10160154

  Summary: This bulletin provides information related to an ECM (Engine Control Module) software update for DTC P0128: Coolant Thermostat (Coolant Temp below Thermostat Regulating Temperature) logic revision.

• TSB #Dealer Best Prac

  NHTSA ID #10160156

  Summary: Hyundai has launched a Service Campaign to update the ECM (Engine Control Module) software for DTC P0128: Coolant Thermostat (Coolant Temp below Thermostat Regulating Temperature) logic improvement.

• TSB #5NP-C5F9C-08

  NHTSA ID #10143791

  Summary: If you are servicing an applicable vehicle with a Check Engine light on and one or more of the DTC listed below, follow the repair procedure and replace the oil pressure harness.

• TSB #5NP-M5G2M-08

  NHTSA ID #10143793

  Summary: If you are servicing an applicable vehicle with a complaint of ?Check Engine Light on? and one or more of the DTC listed below, follow the repair procedure and replace the related solenoid and oil pressure harness.

POWER TRAIN

• TSB #19-AT-012H

  NHTSA ID #10163279

  Summary: This TSB provides a procedure to diagnose and repair a transaxle for the following Incorrect Ratio DTC (transaxle clutch slipping more than 200 rpm in gear).

• TSB #19-AT-010H

  NHTSA ID #10161750

  Summary: This bulletin provides a procedure to transfer pressure data to the ECU/TCU using GDS Mobile. This procedure is necessary to reduce the TCU learning time and improve the shift quality.

• TSB #19-FL-003H

  NHTSA ID #10160098

  Summary: This bulletin provides the procedure to write the Vehicle Identification Number (VIN) during the replacement of the Engine Control Module (ECM) or Powertrain Control Module (PCM). Once the VIN has been programmed to the ECM/PCM, it cannot b

• TSB #19-AT-002H

  NHTSA ID #10154675

  Summary: Certain vehicles (listed below) equipped with 7-speed Dual Clutch Transmission (DCT) may exhibit an abnormal vibration at low speeds. This bulletin outlines the procedures for diagnosing and replacing the Double Clutch, including a Transmis

• TSB #5NP-F6W6P-05

  NHTSA ID #10138235

  Summary: The shift lever on some 6-speed vehicles may intermittently not shift out of Park. This bulletin provides the diagnostic procedures to correct this condition.

POWER TRAIN:AUTOMATIC TRANSMISSION

• TSB #19-AT-010H

  NHTSA ID #10161750

  Summary: This bulletin provides a procedure to transfer pressure data to the ECU/TCU using GDS Mobile. This procedure is necessary to reduce the TCU learning time and improve the shift quality.

• TSB #5NP-P5L7D-05

  NHTSA ID #10138240

  Summary: If you are servicing a vehicle with a harsh and/or delayed shift, use the GDS as shown in the Service Procedure to measure shift engagement time.

POWER TRAIN:AUTOMATIC TRANSMISSION:TORQUE CONVERTER

2018 Hyundai Elantra Wiki

• TSB #5NP-Z6F3A-11

  NHTSA ID #10123305

  Summary: Before installing an automatic transmission, check the depth of the torque converter in the case to confirm the torque converter is fully installed in the transmission. If this is not done, the oil pump may be damaged.

ELECTRICAL SYSTEM

• TSB #19-AT-016H

  NHTSA ID #10165456

  Summary: If you are servicing an applicable vehicle with a ?Check Engine? light on and one or more of the DTC listed below, follow the repair procedure and replace the related solenoid and oil pressure harness.

• TSB #19-FL-003H

  NHTSA ID #10160098

  Summary: This bulletin provides the procedure to write the Vehicle Identification Number (VIN) during the replacement of the Engine Control Module (ECM) or Powertrain Control Module (PCM). Once the VIN has been programmed to the ECM/PCM, it cannot b

• TSB #19-BE-003H

  NHTSA ID #10154676

  Summary: Some vehicles equipped with the wireless charging pad may experience a no charging condition. This bulletin provides information of how to diagnose the no charging condition.

• TSB #5NP-T5B2D-02

  NHTSA ID #10128603

  Summary: This bulletin describes the procedure to determine if the vehicle?s head unit needs to be replaced as a result of the system frequently losing a Bluetooth connection with Apple iPhone devices.

ELECTRICAL SYSTEM: SOFTWARE

• TSB #DCS T3T

  NHTSA ID #10160155

  Summary: Hyundai Motor America is conducting a Service Campaign to update the ECM software on certain 2018 Model Year Elantra GT and 2019 Veloster vehicles equipped with 1.6L turbo engines. Service Campaign T3T provides a procedure to update the

• TSB #Dealer Best Prac

  NHTSA ID #10160156

  Summary: Hyundai has launched a Service Campaign to update the ECM (Engine Control Module) software for DTC P0128: Coolant Thermostat (Coolant Temp below Thermostat Regulating Temperature) logic improvement.

EXTERIOR LIGHTING:HEADLIGHTS

• TSB #5NP-A4C8N-03

  NHTSA ID #10129908

  Summary: This TSB provides information on the headlight pattern changes on certain 2018 MY Sonata (LFa), Elantra (ADa)(AD), Elantra GT (PD), Santa Fe Sport (AN), and Santa Fe (NC).

VISIBILITY

• TSB #19-BE-004H

  NHTSA ID #10158803

  Summary: This bulletin provides information on the serviceable parts for the outside mirror assembly. When diagnosing and repairing the outside mirror, do not replace the entire assembly. Refer to page 2 of this TSB for replacement of individual par

VISIBILITY:REARVIEW MIRRORS/DEVICES

• TSB #19-BE-004H

  NHTSA ID #10158803

  Summary: This bulletin provides information on the serviceable parts for the outside mirror assembly. When diagnosing and repairing the outside mirror, do not replace the entire assembly. Refer to page 2 of this TSB for replacement of individual par

STRUCTURE:BODY:TAILGATE

• TSB #5NP-H4S3S-01

  NHTSA ID #10152854

  Summary: Hyundai Motor America is conducting a Service Campaign to replace the outside tailgate handle on certain 2018 Elantra GT vehicles. Service Campaign T3K provides a service procedure to replace the outside tailgate handle assembly.

• TSB #5NP-S5D9G-01

  NHTSA ID #10152853

  Summary: On certain 2018MY Elantra GT (PD) vehicles, the tailgate outside handle may exhibit cracking. Follow the procedure outlined in this bulletin to replace the tailgate outside handle.

EQUIPMENT

• TSB #5NP-J6B4J-12

  NHTSA ID #10151895

  Summary: This bulletin describes the procedure to determine if the vehicle?s Radio Assembly/Navigation unit needs to be replaced as a result of the sound fader settings changing without any user input intermittently.

• TSB #5NP-Y4N3B-08

  NHTSA ID #10143795

  Summary: This bulletin describes the procedure to diagnose the vehicle?s D-Audio unit as a result of the inability to set the clock or view it on the top of the screen.

Hyundai Elantra Se 2018

EQUIPMENT:ELECTRICAL

• TSB #5NP-J6B4J-12

  NHTSA ID #10151895

  Summary: This bulletin describes the procedure to determine if the vehicle?s Radio Assembly/Navigation unit needs to be replaced as a result of the sound fader settings changing without any user input intermittently.

• TSB #5NP-T5B2D-02

  NHTSA ID #10128603

  Summary: This bulletin describes the procedure to determine if the vehicle?s head unit needs to be replaced as a result of the system frequently losing a Bluetooth connection with Apple iPhone devices.

• TSB #5NP-V3F8T-09

  NHTSA ID #10117373

  Summary: If you are servicing a vehicle with the DTC or symptoms listed below, refer to the Service Procedure to diagnose the condition. ? Diagnostic trouble codes: ? P0705 - Range switch sensor circuit ? P0706 - Range switch range/performance

2018 Hyundai Elantra Problems

EQUIPMENT:OTHER:OWNERS/SERVICE/OTHER MANUAL

• TSB #19-AT-016H

  NHTSA ID #10165456

  Summary: If you are servicing an applicable vehicle with a ?Check Engine? light on and one or more of the DTC listed below, follow the repair procedure and replace the related solenoid and oil pressure harness.

Hyundai Elantra 2018 Price

EQUIPMENT ADAPTIVE

• TSB #19-GI-006H

  NHTSA ID #10167253

  Summary: This bulletin provides instruction detailing the proper methodology for scanning and uploading captured GDS data files to the Techline Repository. Compliance with this bulletin ensures that the GDS data files are correctly transferred and m

• TSB #19-GI-006H

  NHTSA ID #10167253

  Summary: This bulletin provides instruction detailing the proper methodology for scanning and uploading captured GDS data files to the Techline Repository. Compliance with this bulletin ensures that the GDS data files are correctly transferred and m

• TSB #19-AT-016H

  NHTSA ID #10165456

  Summary: If you are servicing an applicable vehicle with a ?Check Engine? light on and one or more of the DTC listed below, follow the repair procedure and replace the related solenoid and oil pressure harness.

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