Dean McCrary Kia Hattiesburg, MS · Service Center
2021 Kia K5 Maintenance Schedule
From the first 7,500-mile visit out to 150,000, here’s the full rundown for either the K5’s 1.6L turbo or 2.5L turbo GT engine. Each row lists what repeats and what’s brand-new to that milestone.
✓ Recurring — due again at this interval ★ New service — first time due at this milestone
| Mileage | Every Visit | Filters | Fluids | Engine | ||||
|---|---|---|---|---|---|---|---|---|
| Oil & Filter | Tire Rotation | Multi-Point Insp. | Cabin Air Filter | Engine Air Filter | Brake Fluid | Spark Plugs | Engine Coolant | |
| 7,500 | ★ | ★ | ★ | |||||
| 15,000 | ✓ | ✓ | ✓ | |||||
| 22,500 | ✓ | ✓ | ✓ | ★ | ||||
| 30,000 | ✓ | ✓ | ✓ | |||||
| 37,500 | ✓ | ✓ | ✓ | ★ | ||||
| 45,000 | ✓ | ✓ | ✓ | ✓ | ★ | ★ | ||
| 52,500 | ✓ | ✓ | ✓ | |||||
| 60,000 | ✓ | ✓ | ✓ | |||||
| 67,500 | ✓ | ✓ | ✓ | |||||
| 75,000 | ✓ | ✓ | ✓ | ✓ | ✓ | |||
| 82,500 | ✓ | ✓ | ✓ | |||||
| 90,000 | ✓ | ✓ | ✓ | |||||
| 97,500 | ✓ | ✓ | ✓ | ✓ | ✓ | ✓ | ||
| 105,000 | ✓ | ✓ | ✓ | ✓ | ||||
| 112,500 | ✓ | ✓ | ✓ | |||||
| 120,000 | ✓ | ✓ | ✓ | ✓ | ★ | |||
| 127,500 | ✓ | ✓ | ✓ | |||||
| 135,000 | ✓ | ✓ | ✓ | |||||
| 142,500 | ✓ | ✓ | ✓ | ✓ | ✓ | ✓ | ✓ | ✓ |
| 150,000 | ✓ | ✓ | ✓ | |||||
The Full 2021 Kia K5 Service Timeline
7,500 miles — first visit: oil & filter change, tire rotation, and a multi-point inspection.
15,000 miles — oil & filter change, tire rotation, and a multi-point inspection.
22,500 miles — oil & filter change, tire rotation, multi-point inspection, plus the cabin air filter’s debut.
30,000 miles — oil & filter change, tire rotation, and a multi-point inspection.
37,500 miles — oil & filter change, tire rotation, multi-point inspection, and the engine air filter makes its first appearance.
45,000 miles — oil & filter change, tire rotation, multi-point inspection, cabin air filter, and first-time service for the brake fluid and spark plugs.
52,500 miles — oil & filter change, tire rotation, and a multi-point inspection.
60,000 miles — oil & filter change, tire rotation, and a multi-point inspection.
67,500 miles — oil & filter change, tire rotation, and a multi-point inspection.
75,000 miles — oil & filter change, tire rotation, multi-point inspection, cabin air filter, and engine air filter.
82,500 miles — oil & filter change, tire rotation, and a multi-point inspection.
90,000 miles — oil & filter change, tire rotation, and a multi-point inspection.
97,500 miles — oil & filter change, tire rotation, multi-point inspection, cabin air filter, brake fluid exchange, and spark plugs.
105,000 miles — oil & filter change, tire rotation, multi-point inspection, and engine air filter.
112,500 miles — oil & filter change, tire rotation, and a multi-point inspection.
120,000 miles — oil & filter change, tire rotation, multi-point inspection, cabin air filter, and the coolant’s first flush.
127,500 miles — oil & filter change, tire rotation, and a multi-point inspection.
135,000 miles — oil & filter change, tire rotation, and a multi-point inspection.
142,500 miles — the big one: oil & filter change, tire rotation, multi-point inspection, cabin air filter, engine air filter, brake fluid exchange, spark plugs, and engine coolant.
150,000 miles — oil & filter change, tire rotation, and a multi-point inspection.
Rows called out above mark the major milestones, and every interval can shift with how the car’s actually driven — severe conditions pull them tighter. The K5’s real-world pace drifts from this 7,500-mile grid here and there: oil & filter really lands closer to every 8,000 miles or 12 months; the cabin air filter follows something like a 24-month cycle (roughly 24,000 miles); the engine air filter runs closer to 36 months (about 36,000 miles); brake fluid exchange is every 48,000 miles or 48 months; and spark plugs on the 2.5L turbo GT are confirmed at 48,000 miles and every 48,000 after — the 1.6L turbo base likely runs a comparable turbo interval, though Kia hasn’t published an exact figure for it, so check with your advisor. Engine coolant gets its first flush at 120,000 miles/120 months, then every 24,000 miles from there. A handful of AWD-equipped 1.6T trims from this era carry a separate driveline service too; no confirmed interval exists for it yet, so ask what your specific trim needs. Your Owner’s Manual and our technicians both have the final word.
What Happens Every 8,000 Miles
- Full synthetic 5W-30 oil & filter change (1.6L turbo base or 2.5L turbo GT)
- Tires rotated and balanced
- A multi-point inspection
- Fluids topped off, leaks checked
- Battery and brakes looked over
The Bigger Milestones
- ~22.5k miles — cabin air filter (~24-month cycle)
- ~37.5k miles — engine air filter (~36-month cycle)
- 48k miles — brake fluid exchange
- 48k miles, then every 48k — spark plugs (confirmed for the 2.5T GT; 1.6T base likely similar)
- 120k miles — engine coolant, then every 24k
Keeping It Running Long-Term
- Genuine Kia parts and factory-approved fluids, every time
- Rotate tires at each oil change, no exceptions
- Have brakes checked ahead of any long trip
- Stick with our Hattiesburg team on schedule — that’s what keeps factory warranty active
- Ask about open recalls whenever you’re in
2021 K5 Resources
Every Model
All Kia Maintenance Schedules
Every Kia model we service out of our Hattiesburg store has a factory-backed schedule like this one.
ResearchK5 Model Research
Trims, specs, and pricing on the current K5, ready to test-drive right here in Hattiesburg.
ShopK5 Inventory
New K5s are on our Hattiesburg lot now — check today’s prices.
SafetyK5 Recall Information
Look up open recalls on your K5 — we handle the repair free, right here in Hattiesburg.
5-Year / 60,000-Mile Basic Warranty
Every new Kia is also covered by a 5-year/60,000-mile limited basic warranty and 5-year/60,000-mile roadside assistance — bumper-to-bumper peace of mind from the day you drive off.
Learn More Book NowSchedule Service
Two minutes online gets you a day and time — from there, our Hattiesburg team takes it from here.
2021 K5 Maintenance FAQs
How Often Should I Change the Oil on a 2021 Kia K5?⌄
Both K5 engines share the same cadence: a fresh oil and filter, full synthetic, every 8,000 miles or 12 months under normal driving. Severe use knocks that down — frequent towing, short trips, dusty roads, extended idling — and drivers in that bucket often land closer to every 4,000–5,000 miles.
Does the 2021 Kia K5 Require Synthetic Oil?⌄
Full synthetic is the call for both K5 engines, the 1.6L turbo and the 2.5L turbo GT alike. It’s what keeps the direct-injection system and both turbochargers protected, and it holds up far better through a hot, humid Pine Belt summer than conventional oil.
When Should I Replace the Spark Plugs on a 2021 K5?⌄
48,000 miles is the confirmed figure for the 2.5L turbo GT under normal use. The 1.6L turbo base doesn’t have a separately published number from Kia, but a similar turbo-length interval is a reasonable expectation — have your advisor confirm for your exact trim.
Does Following This Schedule Protect My Factory Warranty Coverage?⌄
It does. factory warranty remains active for as long as factory-recommended maintenance is completed on time and documented. Have us handle your service and that record-keeping happens automatically.
Ready to Schedule Your Next Service?
Every visit is logged for your factory warranty records, handled by factory-trained technicians right here in Hattiesburg using genuine Kia parts. Give us a call at or grab a slot online — we’re right on US-98 in the Hub City, an easy drive from Petal, Oak Grove, Purvis, and the rest of the Pine Belt.