2015 Kia Sportage: Engine making loud noise accelerating over 5 mph
Common wear/failure (not a recall)
Symptoms
Owners of the 2015 Sportage report: engine making loud noise accelerating over 5 mph. CarComplaints.com lists 1 owner complaints, average mileage 62,000 miles.
NHTSA has 84 owner complaints for the 2015 Sportage in this area. Examples:
- NHTSA complaint ODI #11743850 (filed 06/13/2026): “Engine fire which led to explosion and total loss.…”
- NHTSA complaint ODI #11733440 (filed 04/23/2026): “Unjustified denial of engine warranty coverage - 2015 kia sportage "i am filing this complaint because kia is denying warranty coverage for a known engine defect (rod bearing failure in the theta ii gdi engine) on my 2015 kia sportage. the manufacturer’s denia…”
Likely causes
Sources do not establish a single root cause; diagnosis is needed. Owner-reported fixes are listed below.
Fix, in plain English
Most common owner-reported solutions on CarComplaints.com: engine rebuilt (1 reports). Check for open recalls and extended warranty coverage with a dealer before paying out of pocket.
DIY difficulty: Pro
Internal engine work (lifters, oil consumption, fuel dilution diagnosis) requires engine teardown or dealer software/tests. (Our assessment.)
Cost
CarComplaints.com owners report a typical repair cost of about $2,000 (owner-reported average, not a quote).
Typical parts (search links, no affiliate codes)
AutoZone · O'Reilly · Advance · RockAuto
Sources
- CarComplaints.com: Engine making loud noise accelerating over 5 mph (2015 Sportage)
- NHTSA complaints API, 2015 Sportage
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