caryle

2021 Kia Forte maintenance schedule

The 2021 Forte is part of the BD generation (2019-2024), sold as a sedan. Below: its service intervals with the source behind each one, the fluids it takes, the problems owners report for this year, and the NHTSA recalls issued for it.

Service schedule

What the 2021 Forte needs, and when

All 11 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 for turbo/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

Essential for FWD

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; replace severe

Inspect, replace as neededManufacturer
Spark plugs

42,000 miles for 1.6T

97,500 miManufacturer
Serpentine belt

Inspect; replace if worn

60,000 mi / 4 yearsManufacturer
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
0W-20 / 5W-30, 4.23 qt
Coolant
Ethylene Glycol
Transmission fluid
SP-CVT1 / DCT Gear Oil

Powertrains in this generation

  • 2.0L 4-cyl (Nu MPI), 147 hp, CVT (IVT) / 6MT, FWD
  • 1.6L 4-cyl (Gamma T-GDI), 201 hp, 7DCT / 6MT, FWD

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

Known problems

What 2021 Forte owners run into

Problems reported for this model year, with the mileage they tend to show up at. Buying past a window is not automatically a pass - it just needs to be priced in.

IVT transmission failure

high severity

20,000-60,000 mi · $3,000-$4,500 to fix

Shuddering, limp mode

Source: repairpal.com

Dual-clutch shudder

medium severity

30,000-60,000 mi · $800-$2,500 to fix

Jerky low-speed shifts

Source: repairpal.com

Safety recalls

2 NHTSA recalls for the 2021 Kia Forte

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.

Steering

NHTSA 22V304000

May 2022

Kia Motors America (Kia) is recalling certain 2021-2022 Rio and Forte vehicles. A bolt in the steering column may not be secured properly, which can cause the steering column to detach from the steering rack and result in a loss of steering control.

Remedy: Dealers will tighten the lower steering column u-joint retention bolt, free of charge. Owner notification letters were mailed May 27, 2022. Owners may contact Kia customer service at 1-800-333-4542. Kia's number for this recall SC235.

Air bags

NHTSA 21V164000

March 2021

Kia Motors America (Kia) is recalling certain 2021 Telluride, K5, and Forte vehicles. The Occupant Classification and Detection System (OCS/ODS) unit may not detect the presence of a child restraint system in the front passenger seat. As such, these vehicles fail to comply with the requirements of Federal Motor Vehicle Safety Standard (FMVSS) number 208, "Occupant Crash Protection."

Remedy: Kia will notify owners, and dealers will replace the OCS/ODS unit, free of charge. The recall began March 18, 2021. Owners may contact Kia customer service at 1-800-333-4542. Kia's number for this recall is SC207.

Running costs

What maintenance typically costs

A typical year of maintenance
$451
Five years of maintenance
$2,255
The major service near 100,000 mi
$650

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

Other Forte model years

BD (2019-2024)

201920202021202220232024

Shopping new? The Kia Forte 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 Forte for income?

Carlyle scores the exact listing on cost per remaining mile and projected Turo income, so you know what a 2021 Forte 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.