Kia K9 (K900) maintenance by mileage
How often owners do it
Engine oil and filterevery 5,500 mi
Engine air filterevery 6,000 mi
Cabin air filterevery 7,500 mi
Wiper bladesevery 11,000 mi
Coolant (antifreeze)every 14,000 mi
A/C refrigerant rechargeevery 14,000 mi
When the bigger jobs come up
Tiresaround 68,000 mi
Batteryaround 79,000 mi
Differential / gear oilaround 79,000 mi
Control arms, links and bushingsaround 108,000 mi
Spark plugsaround 92,000 mi
Shocks / strutsaround 106,000 mi
All 36 jobs, by mileage
| Job | Usually at | Most between | Again every | Visits |
|---|---|---|---|---|
| Tires | 68,000 mi | 39,000–103,000 mi | – | 1,116 |
| Transfer case fluid | 70,000 mi | 57,000–101,000 mi | – | 122 |
| Cabin air filter | 77,000 mi | 50,000–109,000 mi | 7,500 mi | 5,937 |
| Wiper blades | 77,000 mi | 51,000–106,000 mi | 11,000 mi | 897 |
| Differential / gear oil | 79,000 mi | 58,000–106,000 mi | – | 913 |
| Battery | 79,000 mi | 52,000–108,000 mi | – | 1,020 |
| Wheel alignment | 79,000 mi | 48,000–112,000 mi | 18,000 mi | 2,271 |
| Engine air filter | 80,000 mi | 50,000–114,000 mi | 6,000 mi | 6,309 |
| Engine oil and filter | 81,000 mi | 54,000–114,000 mi | 5,500 mi | 23,167 |
| Brake fluid | 85,000 mi | 59,000–116,000 mi | 22,000 mi | 1,483 |
| Transmission fluid | 85,000 mi | 63,000–114,000 mi | 23,000 mi | 2,200 |
| CV axle or boot | 85,000 mi | 62,000–113,000 mi | – | 91 |
| Water pump | 87,000 mi | 70,000–111,000 mi | – | 592 |
| Fuel injectors | 89,000 mi | 64,000–123,000 mi | – | 135 |
| Tire rotation | 90,000 mi | 61,000–120,000 mi | – | 193 |
| Timing belt or chain | 90,000 mi | 69,000–115,000 mi | – | 140 |
| Rear brake pads or shoes | 91,000 mi | 66,000–121,000 mi | 24,000 mi | 1,531 |
| Ignition coils | 91,000 mi | 71,000–118,000 mi | – | 596 |
| Spark plugs | 92,000 mi | 72,000–120,000 mi | – | 762 |
| Drive (serpentine) belt | 93,000 mi | 70,000–119,000 mi | – | 94 |
| Fuel filter | 94,000 mi | 80,000–124,000 mi | – | 37 |
| Brake rotors (replace or resurface) | 95,000 mi | 69,000–124,000 mi | – | 449 |
| Throttle body cleaning | 96,000 mi | 72,000–126,000 mi | – | 264 |
| Coolant (antifreeze) | 97,000 mi | 71,000–126,000 mi | 14,000 mi | 1,810 |
| Front brake pads | 98,000 mi | 74,000–126,000 mi | 26,000 mi | 1,538 |
| Thermostat | 99,000 mi | 76,000–129,000 mi | – | 94 |
| Power steering fluid | 100,000 mi | 78,000–127,000 mi | – | 220 |
| Engine and transmission mounts | 102,000 mi | 75,000–135,000 mi | – | 326 |
| A/C refrigerant recharge | 103,000 mi | 79,000–132,000 mi | 14,000 mi | 1,013 |
| Shocks / struts | 106,000 mi | 81,000–132,000 mi | – | 716 |
| Brake calipers | 106,000 mi | 82,000–146,000 mi | – | 97 |
| Starter motor | 107,000 mi | 80,000–135,000 mi | – | 148 |
| Control arms, links and bushings | 108,000 mi | 84,000–133,000 mi | – | 815 |
| Wheel bearing | 112,000 mi | 71,000–137,000 mi | – | 156 |
| Radiator | 114,000 mi | 89,000–145,000 mi | – | 182 |
| Alternator | 115,000 mi | 100,000–136,000 mi | – | 82 |
From 33,650 visits to independent repair shops in South Korea, 2020–2026 (model years mostly 2013–2021). Mileage converted from km and rounded; Korean-market cars can differ from US ones. Your owner’s manual comes first.