# Kenworth T370 Used Price & Common Problems | Big Rig Risk

> Kenworth T370: used $29,900 to $69,900. Documented problems: Allison automatic transmission and Allison valve body. What to inspect before you buy.

**Verdict:** insufficient-data

Documented failure points and real market prices for the Kenworth T370, sourced and dated.

**Observed used price:** $29,900–$69,900

**Documented failure risks:**
- Allison automatic transmission: Torque converter wear in Allison automatics common to T370 vocational trims causes shuddering and slipping by 300k-400k miles.
- Allison valve body: Valve body degradation in the same Allison transmission family produces erratic and harsh shifting.
- EGR valve: EGR valve failure common to diesel vocational trucks like the T370 shows up first as rough idle before triggering fault codes.
- EGR valve, sticking open: A stuck-open EGR valve produces black exhaust smoke, a symptom reported across medium-duty vocational trucks in this weight class.

## Sources
- [skylinerrepaircenter.com (failure evidence)](https://www.skylinerrepaircenter.com/blog/allison-automatic-transmission-maintenance-and-common-issues) (accessed 2026-09-05)
- [skylinerrepaircenter.com (failure evidence)](https://www.skylinerrepaircenter.com/blog/truck-egr-valve-problems-symptoms-cleaning-and-replacement) (accessed 2026-09-05)
- [soarr.com dealer inventory (5 real listings)](https://www.soarr.com/for-sale/trucks/0/Kenworth/T370/all-for-sale) (accessed 2026-09-05)
- [NHTSA recall 10V150000 (POWER TRAIN:AXLE ASSEMBLY)](https://www.nhtsa.gov/recalls?nhtsacampaignnumber=10V150000) — "KENWORTH IS RECALLING CERTAIN MODEL YEAR 2010 T270 AND T370 TRUCKS EQUIPPED WITH NON-LMS HUBS.  THE SPINDLE NUT ATTACHING THE HUB AND BEARING TO THE AXLE SPINDLE (STEER OR DRIVE) MAY HAVE BEEN OVER-TORQUED DURING THE HUB INSTALLATION PROCESS." (accessed 2026-09-11)
- [NHTSA recall 24V145000 (SERVICE BRAKES, AIR:SUPPLY:RESERVOIR/TANK)](https://www.nhtsa.gov/recalls?nhtsacampaignnumber=24V145000) — "PACCAR Incorporated (PACCAR) is recalling certain 2009-2021 Kenworth C500, 2012-2021 Kenworth T440, 2009-2015 Kenworth T660, 2015-2024 Kenworth T680, 2009-2024 Kenworth T800, 2009-2020 Kenworth T370, 2014-2023 Kenworth T880, 2011-2016 Kenworth T470, 2023 Kenworth T480, and 2009-2019 Kenworth W900 vehicles.  The air tanks have an insufficient volume of air for the brake system.  As such, these vehicles fail to comply with the requirements of Federal Motor Vehicle Safety Standard number 121, "Air Brake Systems."" (accessed 2026-09-11)

_Last verified 2026-09-11. Source: Big Rig Risk — https://bigrigrisk.com/trucks/kenworth-t370/ — every claim checked against a primary source before publication (see /methodology/)._