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2018 Kia

Niro

Auto (AM6), 4 cyl, 1.6 L

Kia Niro: best and worst years
2018 Kia Niro

Closest available photo (2017 model year); you're viewing the 2018.

2017 photoVauxfordCC BY-SA 4.0Wikimedia Commons

Overview

Body
Small Sport Utility Vehicle 2WDEPA, from EPA, last updated 6/11/2026
Drivetrain
Front-Wheel DriveEPA, from EPA, last updated 6/11/2026
Transmission
Automatic (AM6)EPA, from EPA, last updated 6/11/2026
Powertrain
HybridEPA, from EPA, last updated 6/11/2026
Fuel
RegularEPA, from EPA, last updated 6/11/2026

Engine & performance

Axle ratio
3.23
Cyl
4EPA, from EPA, last updated 6/11/2026
Aspiration
Naturally aspiratedEPA, from EPA, last updated 6/11/2026
Start-stop system
YesEPA, from EPA, last updated 6/11/2026

Efficiency

MPG Hwy
46 mpgEPA, from EPA, last updated 6/11/2026
MPG City
51 mpgEPA, from EPA, last updated 6/11/2026
MPG Comb
49 mpgEPA, from EPA, last updated 6/11/2026
Fuel $/yr
$1,250EPA, from EPA, last updated 6/11/2026
CO₂
183 g/miEPA, from EPA, last updated 6/11/2026
Eco Score
10/10EPA, from EPA, last updated 6/11/2026
Smog score
7/10
Elec. Range
0 miEPA, from EPA, last updated 6/11/2026
Real-world MPG
50.7 mpg, reported by 7 driversabout 1.7 mpg above the EPA combined estimate
SmartWay certified
Yes

Dimensions & capacity

Length
172 inNHTSA vPIC, from NHTSA vPIC, last updated 6/5/2026
Width
71 inNHTSA vPIC, from NHTSA vPIC, last updated 6/5/2026
Height
61 inNHTSA vPIC, from NHTSA vPIC, last updated 6/5/2026
Wheelbase
106 inNHTSA vPIC, from NHTSA vPIC, last updated 6/5/2026
Curb Weight
3,166 lbNHTSA vPIC, from NHTSA vPIC, last updated 6/5/2026
Pass. Vol
101 ft³EPA, from EPA, last updated 6/11/2026
Cargo Vol
22 ft³EPA, from EPA, last updated 6/11/2026

Safety NHTSA, model year

Recalls
0
Owner complaints
0

Federal investigations NHTSA defect investigations, model year

  • DP22005opened Jan 27, 2023ELECTRICAL SYSTEM:PROPULSION SYSTEM

    Pedestrian alert sounds

Known issues manufacturer service bulletins, model year

98 service bulletins filed with NHTSA for this model year

  • Dec 9, 2025BACK OVER PREVENTION: WARNINGSPS797

    PITSTOP: TECHNICAL OPERATIONS: EXTERNAL DAMAGE TO ULTRASONIC SENSOR: This Pitstop provides information related to Parking Distance Warning (PDW) alerts and repairs involving ultrasonic sensors. The PDW system alerts the driver while parking, by calculating distance based on the difference in signal transmission and reception times between the vehicle (ultrasonic sensor) and an object. The membrane film of the ultrasonic sensor is used for object detention and can be damaged by stone chips or for

  • Apr 17, 2025POWER TRAINTSB_TRA046_R5

    TECHNICAL SERVICE BULLETIN: TRANSMISSION FLUID APPLICATION GUIDE - This bulletin has been revised to include additional information. New/revised sections of this bulletin are indicated by a black bar in the margin area. This bulletin provides information relating to the correct transmission fluid type and fill quantity requirement for each Kia model. A flush is required ONLY when a transmission is replaced, and the transmission oil cooler is transferred to the new transmission.

  • Apr 3, 2025ENGINETSB_ENG222_R8

    TECHNICAL SERVICE BULLETIN: EXCESSIVE OIL CONSUMPTION NU/GAMMA/THETA/KAPPA ENGINES - This bulletin has been revised to include additional information. New/revised sections of this bulletin are indicated by a black bar in the margin area. This bulletin provides information on diagnosing and/or repairing some 2011-2024MY vehicles (refer to the table on pages 9 and 10 for applicable models and engine), which may exhibit a symptom of excessive oil consumption.

  • Mar 20, 2025ELECTRICAL SYSTEMTSB_ELE378

    TECHNICAL SERVICE BULLETIN: SERVICE ACTION: KIA CONNECT MODEM RESET (SA611) - This bulletin outlines the procedure for resetting the modem in certain 2016-2025MY Kia vehicles listed on page 3 that are equipped with Kia Connect Services. The affected vehicles may encounter the following issues: remote Start/Climate Control function not working, vehicle Status on the Kia Access App not updating, connected routing not functioning properly.

  • Feb 28, 2025ENGINETSB_ENG222_R7

    TECHNICAL SERVICE BULLETIN: EXCESSIVE OIL CONSUMPTION NU/GAMMA/THETA/KAPPA ENGINES - This bulletin has been revised to include additional information. New/revised sections of this bulletin are indicated by a black bar in the margin area. This bulletin provides information on diagnosing and/or repairing some 2011-2024MY vehicles (refer to the tables on pages 8-9 for applicable models and engine), which may exhibit a symptom of excessive oil consumption.

  • May 16, 2024POWER TRAINTSB_TRA046_R4

    This bulletin provides information relating to the correct transmission fluid type and fill quantity requirement for each Kia model. A flush is required ONLY when a transmission is replaced.

  • Jun 26, 2023ELECTRICAL SYSTEMTSB_CLI049_R1

    TECHNICAL SERVICE BULLETIN: PARTIAL REPAIR - ELECTRICAL A/C COMPRESSOR - This bulletin has been revised to include additional information. New/revised sections of this bulletin are indicated by a black bar in the margin area. This bulletin provides information regarding partial repair of the Air Conditioning (A/C) compressor assembly on some 2011MY~ Optima Hybrid (TF HEV, JF HEV/PHEV), 2015MY~ Soul EV (PS EV), 2017MY~ Niro (DE HEV/PHEV/EV), 2022MY~ EV6 (CV), 2021MY~ Sorento (MQ4 HEV/PHEV), 202

  • Jun 6, 2023ELECTRICAL SYSTEMPS748

    PITSTOP: SHARING KIA CONNECT CREDENTIALS WITH THIRD-PARTY APPS AND POTENTIAL IMPACT TO 12V BATTERY IN EVS - Kia is aware of reports of unexpected drainage of the 12-volt battery in some Kia electric vehicles (EVs). While Kia’s investigation is ongoing, a possible cause of the issue may be third-party applications used by the customer that are causing excessive Kia Connect connections to the customer’s EV.

  • and 90 more

Source: NHTSA manufacturer communications (technical service bulletins).

Warranty manufacturer terms, by make

Basic
5 yr / 60k mi
Powertrain
10 yr / 100k mi
Roadside assistance
5 yr / 60k mi
EV battery
10 yr / 100k mi

Information is gathered on a best-effort basis from public sources, may be incomplete or out of date, and is not purchasing or financial advice. Verify with the manufacturer or dealer before buying.