caryle

2018 Kia K900 maintenance schedule

The 2018 K900 is part of the KH generation (2015-2018), sold as a sedan. Below: its service intervals with the source behind each one, the fluids it takes, and the NHTSA recalls issued for it.

Service schedule

What the 2018 K900 needs, and when

All 12 of these items come from Kia's own published schedule. Manufacturer rows link to Kia's own schedule, Independent rows to a service shop or parts retailer's published guide.

ServiceIntervalSource
Engine oil and filter

5,000 miles severe

7,500 mi / 1 yearManufacturer
Engine air filter

Inspect at 15,000

30,000 mi / 2 yearsManufacturer
Cabin air filter

More frequent in dust

15,000 mi / 1 yearManufacturer
Tire rotation

Ensure even wear

7,500 mi / 6 monthsManufacturer
Brake fluid

Inspect every 8,000 miles

48,000 mi / 4 yearsManufacturer
Engine coolant

Then every 24,000 miles / 24 mo

120,000 mi / 10 yearsManufacturer
Transmission fluid

Inspect at 60,000

Inspect, replace as neededManufacturer
Spark plugs

Iridium

97,500 miManufacturer
Serpentine belt

Inspect; replace if worn

60,000 mi / 4 yearsManufacturer
Differential and transfer case fluid (RWD)

Severe

72,000 miManufacturer
PCV valve

Inspect at 15,000

Inspect, replace as neededManufacturer
12V batteryInspect, replace as neededManufacturer

Intervals are for normal driving; towing, short trips, extreme heat or dust shorten them.

Fluids and engines

What goes in it

Engine oil
5W-30, 7.3 qt
Coolant
Ethylene Glycol
Transmission fluid
SP-IV-RR

Powertrains in this generation

  • 3.8L 6-cyl (Lambda II GDI), 311 hp, 8AT, RWD
  • 5.0L 8-cyl (Tau GDI), 420 hp, 8AT, RWD

Confirm the exact spec against the owner's manual or the label under the hood; capacities vary by engine and drivetrain.

Safety recalls

2 NHTSA recalls for the 2018 Kia K900

From NHTSA's recall database, matched by model and year. Recall repairs are free at Kia dealers, and a given car may already be fixed or fall outside a campaign, so check the VIN at nhtsa.gov/recalls before you buy.

Service brakes, hydraulic

NHTSA 23V652000

September 2023

Kia America, Inc. (Kia) is recalling certain 2010-2019 Borrego, 2014-2016 Cadenza, 2010-2013 Forte, Forte Koup, Sportage, 2015-2018 K900, 2011-2015 Optima, 2011-2013 Optima Hybrid, Soul, 2012-2017 Rio, 2011-2014 Sorento, and 2010-2011 Rondo vehicles. The Hydraulic Electronic Control Unit (HECU) may experience an electrical short, which can result in an engine compartment fire while parked or driving.

Remedy: Owners are advised to park outside and away from structures until the recall repair is complete. Dealers will replace the HECU fuse, free of charge. Interim notification letters, notifying owners of the safety risk, were mailed November 14, 2023. Owner notification letters were mailed March 29, 2024 through June 18, 2024. Owners may contact Kia customer service at 1-800-333-4542. Kia's number for this recall is SC284.

Service brakes, hydraulic

NHTSA 22V051000

February 2022

Kia Motors America (Kia) is recalling certain 2016-2018 K900 and 2014-2016 Sportage vehicles. The Hydraulic Electronic Control Unit (HECU) module could malfunction and cause an electrical short, which could result in an engine compartment fire.

Remedy: Owners are advised to park outside and away from structures until the recall repair is complete. Dealers will install a new fuse for the HECU circuit board, free of charge. Owner notification letters were mailed September 22, 2022. Owners may contact Kia customer service at 1-800-333-4542. Kia's number for this recall is SC227.

Running costs

What maintenance typically costs

A typical year of maintenance
$650
Five years of maintenance
$3,250
The major service near 100,000 mi
$1,100

Typical US independent-shop estimates for this generation; they vary by region and condition.

Other K900 model years

RJ (2019-2020)

20192020

KH (2015-2018)

2015201620172018

Shopping new? The Kia K900 guide covers the current model, with what it costs to keep for 1 to 15 years.

Sources

Researched 2026-09-16. Modeling, not mechanic advice - always confirm against your car's owner's manual and service records.

Running a K900 for income?

Carlyle scores the exact listing on cost per remaining mile and projected Turo income, so you know what a 2018 K900 earns before you buy it.

Start your fleetBuying one for yourself

Free to start. No card, and we never sell your details to a dealer.