2025 Kia K5 Lemon Law Case Study — Wisconsin
A 2025 Kia K5 GT Sidelined by Recurring Transmission Judder — Two Full Replacements Could Not Fix It
Our client purchased a new 2025 Kia K5 GT from an authorized Kia dealership in Wisconsin in September 2024 with only 18 miles on the odometer at delivery. Within months the transmission began jumping and stuttering between gears, particularly during the first few minutes of driving. The dealer’s first response was a software-only fix — a manufacturer-issued logic-improvement recall — with the warning that it “may not guarantee a fix.” That warning turned out to be exactly right.
Across three documented warranty repair events, the dealer ultimately replaced the transmission twice, performed a manufacturer-issued PDC update recall, flushed the cooling and transmission systems, executed Kia’s prescribed characteristic-value learn and relearn procedures, replaced the engine skid plate, and replaced the ATF warmer per Kia field-engineer advice. The vehicle was out of service for 54 cumulative days — nearly two months — and the recurring judder continued to return after each fix. With the customer driven out of confidence in the K5 and Kia’s repair attempts at a dead end, a Wisconsin Lemon Law and federal Magnuson-Moss claim was the only viable path forward.
What Went Wrong
- Recurring transmission judder and stuttering between gears: The defect substantially impaired drivability from the first repair visit onward and survived every Kia-prescribed correction
- Logic-improvement recall ineffective: Kia’s first-line software fix was performed at the initial visit but the dealer expressly advised it “may not guarantee a fix” — and the judder returned
- First transmission replacement failed: After the recall did not resolve the issue, the dealer replaced the transmission per Kia Techline advice, flushed the cooler, performed characteristic input values, and relearned values — the judder still returned
- PDC update recall performed in parallel: A manufacturer-issued PDC (Park-by-wire / drive controller) update recall was completed during the first transmission replacement — another factory admission of a software-architecture nonconformity
- Second transmission replacement — same outcome: Just nine days after picking the vehicle back up, the customer returned with the same stuttering. Kia Techline directed a second full transmission replacement, plus a fresh fluid flush, characteristic value learn, transmission and cooling system fill, and value relearn
- ATF warmer and engine skid plate replaced on Kia field-engineer advice: The fact that Kia’s own field engineer ordered ancillary drivetrain hardware replacements during the second transmission swap underscores how unsettled the diagnosis remained
- 34 + 20 = 54 days out of service: Two consecutive multi-week dealer holds well exceeded Wisconsin’s 30-day cumulative threshold under Wis. Stat. § 218.0171
Three Visits, Two Transmission Replacements, One Persistent Defect
Visit 1 — May 12, 2025 (1 Day)
- Customer reported the K5 jumping and stuttering between gears when first driving the vehicle
- Technicians were unable to duplicate the concern at the dealership
- An open Kia logic-improvement recall was found and the update was performed
- The dealer expressly advised the customer that the recall “may not guarantee a fix” for the transmission judder
Visit 2 — July 17 to August 19, 2025 (34 Days)
- The transmission continued to judder after the prior logic-improvement update — the issue was now verified at the dealership
- Per Kia Techline advice, the entire transmission was replaced
- Transmission cooler flushed; characteristic input values performed; transmission values relearned
- A separate manufacturer-issued PDC update recall was also completed during this visit
- Vehicle was out of service for 34 consecutive days at the dealership
Visit 3 — August 28 to September 16, 2025 (20 Days)
- The customer returned just nine days later with the same stuttering complaint that had triggered the prior transmission replacement
- Per Kia Techline advice, the transmission was replaced for the second time
- System flushed; characteristic value learn performed; transmission filled; cooling system filled; transmission value relearn performed; alignment performed
- Engine skid plate replaced per Kia tech advice
- ATF warmer replaced per Kia field-engineer advice
- Vehicle out of service for an additional 20 consecutive days — bringing cumulative dealer time to 54 days — with the same drivetrain defect that had not been permanently resolved by either replacement, the recall, or the PDC update
Why This Kia K5 Qualified for a Vehicle Buyback Under Wisconsin Law
Wisconsin’s Lemon Law — codified at Wis. Stat. § 218.0171 — is one of the most consumer-friendly lemon statutes in the Midwest. A vehicle qualifies as a lemon if, within the first year of original delivery to the consumer, the manufacturer or its authorized dealer cannot conform the vehicle to its express warranty after a reasonable number of attempts — generally four repair attempts for the same nonconformity, or a cumulative total of thirty or more days out of service for one or more nonconformities. The cumulative-days prong is independent of the repair-attempt count. Once the threshold is met, the manufacturer must offer a comparable replacement vehicle or a refund of the full collateral and incidental damages — at the consumer’s election.
This case presented several compelling legal factors:
- Wisconsin Lemon Law eligibility (Wis. Stat. § 218.0171): The K5 was out of service for 54 cumulative days — nearly double Wisconsin’s 30-day statutory threshold — and the entire timeline sat squarely inside the first year of original delivery (purchased September 2024; first repair May 2025; final replacement September 2025).
- Same nonconformity, repeated unsuccessful repair attempts: The recurring transmission judder/stutter between gears was the basis for every visit. Kia’s logic-improvement recall, two complete transmission replacements, and an ATF warmer replacement could not permanently resolve the same defect.
- Manufacturer-issued recalls confirm the defect existed: Kia America itself issued the logic-improvement recall and the PDC update recall — both performed on this vehicle — manufacturer admissions that components in this car required correction.
- Substantial impairment of use, value, and safety: A drivetrain that judders and stutters between gears compromises driveability, predictability under acceleration, and resale value. Two complete transmission swaps signal a defect Kia could not engineer out of this car.
- Federal Magnuson-Moss Warranty Act: Repeated unsuccessful warranty repairs on a written-warranty nonconformity also triggered a federal claim with attorney-fee shifting against Kia America, allowing our client to keep the full settlement separate from legal fees.
How Easy Lemon Secured the Buyback
Free Case Evaluation
We reviewed the complete repair history and confirmed three documented warranty repair events with two full transmission replacements and 54 cumulative days out of service — all inside Wisconsin’s first-year statutory window.
Documentation & Case Building
Our team compiled every repair order, transmission-replacement parts list, characteristic-value learn record, ATF warmer replacement, engine skid plate replacement, Kia Techline directive, logic-improvement recall, and PDC update recall into an airtight timeline showing Kia’s inability to permanently repair the K5’s drivetrain defect.
Demand to Kia America, Inc.
We filed a formal demand against Kia America, Inc. citing Wisconsin’s Lemon Law (Wis. Stat. § 218.0171) and the federal Magnuson-Moss Warranty Act — documenting three repair attempts, 54 cumulative days out of service, and a transmission defect Kia’s own recalls and Techline procedures could not fix.
Vehicle Buyback Settlement
Easy Lemon successfully negotiated a Vehicle Buyback — Kia repurchased the K5 from our client and refunded the collateral and incidental damages owed under the statute. Our client paid nothing out of pocket for legal representation; Kia paid all attorney fees separately under the federal Magnuson-Moss fee-shifting provision.
Vehicle Buyback Recovered
Key Case Facts
- Vehicle: 2025 Kia K5 GT
- Purchased in: Wisconsin (authorized Kia dealership, September 2024)
- Status at purchase: Brand new (18 miles at delivery)
- Mileage at first repair: 18,059 miles (current 23,468)
- Primary defects: Recurring transmission judder and stuttering between gears that survived a logic-improvement recall, a PDC update recall, two complete transmission replacements (both per Kia Techline advice), an engine skid plate replacement, and an ATF warmer replacement (per Kia field-engineer advice)
- Repair attempts: 3 documented warranty repair events at an authorized Kia dealership
- Days out of service: 54 cumulative days (34 + 20) within the first year of original delivery
- Manufacturer: Kia America, Inc.
- Settlement type: Vehicle Buyback — manufacturer repurchase under Wis. Stat. § 218.0171
Results may vary. Prior outcomes do not guarantee a similar result. Each case is unique and depends on its specific facts and applicable law. Attorney advertising. Easy Lemon® by RockPoint Law P.C.
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Attorney on Record
Steven Nassi, Esq.
Managing Partner — Easy Lemon by RockPoint Law P.C.
Licensed attorney specializing exclusively in lemon law across all 50 states. Steven leads the Easy Lemon legal team and has overseen thousands of successful lemon law claims against major manufacturers including Kia, Hyundai, Stellantis (Dodge, Jeep, Ram, Chrysler), General Motors, Ford, Tesla, BMW, Mercedes-Benz, and more.
Having Transmission Problems With Your Kia K5?
Recurring transmission judder, stuttering between gears, or a K5 that has already been in the shop multiple times in Wisconsin is unacceptable — and you may already qualify for a buyback under Wis. Stat. § 218.0171. Free case evaluation — 30 seconds.
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