Recall on record for this model family
- NHTSA 25V181000 — ELECTRICAL SYSTEM:PROPULSION SYSTEM NHTSA recall: official notice
- NHTSA 21V080000 — ENGINE NHTSA recall: official notice
Verify the unit's serial number against the official notice before purchase.
Last verified against the primary source on Sep 11, 2026.
One observed listing at $12,000, a thin comp set. Biggest documented cost risk: the fuel pump, the most common complaint. Buy only after inspection.
Confidence 58%2 observed comparables
As of Aug 19, 2026What can make the cheap machine expensive?
| Component | Severity | Documented repair cost |
|---|---|---|
| Fuel pump | medium | not yet verified |
| EGR valve sticking open | medium | not yet verified |
| Spun main bearings | medium | not yet verified |
| VGT turbo fouling | medium | not yet verified |
Fuel pump is the headline complaint: "the most common problem is the fuel pump...
Cost not yet verifiedEGR valve sticking open from carbon buildup at low idle causes derate/check-engine…
Cost not yet verifiedA second mechanic source (Francisco Amaya) documents spun main bearings…
Cost not yet verifiedEngine-family sources (shared Cummins 15L platform, X15 = post-2017 ISX15): VGT turbo…
Cost not yet verifiedPACCAR Incorporated (PACCAR) is recalling certain 2022-2025 Peterbilt 520, 579, and 2021-2025 Kenworth T680 trucks. The high voltage (HV) contactors may open, causing a sudden loss of high voltage and a loss of drive power.
Common questions
How much does a used Kenworth T680 cost?
We have one observed listing, at 12,000 (as of 2026-08-19). One listing is not a price range, so treat it as a single data point.
What fails on the Kenworth T680?
The most cited concerns in our evidence record: Fuel pump, EGR valve sticking open, Spun main bearings. See the risk breakdown above for details and sources.
Is the Kenworth T680 under recall?
A safety recall exists for this model family. Verify the unit's serial number against the official notice linked on this page before buying.
Live listings on eBay
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From the research record
- FAILURES: - Fuel pump is the headline complaint: "the most common problem is the fuel pump... from 17 all the way to 21, the fuel pump is having issues," with a recall referenced on camera. Watch for rough idling, excessive smoke, and extended cranking (video transcript: https://www.youtube.com/watch?v=oh6-x3lp-iM @ 00:01:03-00:01:38, recall @ 00:01:24). - E
- REPAIR: - Injectors: ~$1,000 each (video transcript: https://www.youtube.com/watch?v=CrDuDh0DsbM @ 00:00:58). - Cylinder head replacement (SOHC variant): ~$3,750. https://www.cylinder-heads.com/cummins-isx/ - Engine Overhaul Rebuil
- LIFE: - Documented service life of 500,000+ miles achievable; fuel economy 7-10 MPG typical; base warranty 2yr/250,000mi, extended 5yr/500,000mi. https://www.cylinder-heads.com/cummins-isx/
- VIDEO (00:00:58 https://www.youtube.com/watch?v=CrDuDh0DsbM): "thing. And luckily for me, it's a relief valve cuz injectors are about $1,000 a"
- VIDEO (00:01:00 https://www.youtube.com/watch?v=CrDuDh0DsbM): "valve cuz injectors are about $1,000 a"
- VIDEO (00:01:00 https://www.youtube.com/watch?v=CrDuDh0DsbM): "valve cuz injectors are about $1,000 a piece. So, we're starting it. And uh"
- RECALL (25V181000, ELECTRICAL SYSTEM:PROPULSION SYSTEM): PACCAR Incorporated (PACCAR) is recalling certain 2022-2025 Peterbilt 520, 579, and 2021-2025 Kenworth T680 trucks. The high voltage (HV) contactors may open, causing a sudden loss of high voltage and a loss of drive power.
- RECALL (21V080000, ENGINE): PACCAR Incorporated (PACCAR) is recalling certain 2021-2022 Kenworth T680, T880, W990, T800, W900 and Peterbilt 579, 567, 389, 367 vehicles equipped with a Cummins X15 engine. The capscrews that attach the flywheel to the crankshaft may have been improperly torqued, allowing the flywheel to detach.
Sources
- youtube.comweb · research-cited · accessed 2026-08-19
- youtube.comweb · research-cited · accessed 2026-08-19
- dieselpro.comweb · research-cited · accessed 2026-08-19
- 4btengines.comweb · research-cited · accessed 2026-08-19
- cylinder-heads.comweb · research-cited · accessed 2026-08-19
- youtube.comweb · research-cited · accessed 2026-08-19
- dieselrebuildkits.comweb · research-cited · accessed 2026-08-19
- truckpaper.comweb · research-cited · accessed 2026-08-19
- NHTSA recall 25V181000 (ELECTRICAL SYSTEM:PROPULSION SYSTEM)nhtsa-recall · verified-primary · accessed 2026-09-11
- NHTSA recall 21V080000 (ENGINE)nhtsa-recall · verified-primary · accessed 2026-09-11
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