https://bigrigrisk.com/updates/Used Class 8 truck decision intelligence combining truck configuration, engine generation, mileage and hours, known failure exposure, emissions systems, market context, and maintenance evidence. https://bigrigrisk.com/trucks/cummins-x15/https://bigrigrisk.com/trucks/cummins-x15/Mon, 14 Sep 2026 00:00:00 GMTHigh-pressure fuel pump (CM2250/CM2350) is the X15's headline failure, with owners paying roughly $3,000 plus labor and a recommended 300k-400k mile replacement interval. Inspect fuel pump history and mileage before buying. https://bigrigrisk.com/trucks/detroit-dd15/https://bigrigrisk.com/trucks/detroit-dd15/Mon, 14 Sep 2026 00:00:00 GMTRecurring EGR cooler cracking and turbo cartridge seal failures show up on DD15s past 700k miles, with one verified $400 coolant reservoir fix. Inspect the EGR/turbo/coolant history before buying. https://bigrigrisk.com/trucks/freightliner-cascadia-cummins-isx15/https://bigrigrisk.com/trucks/freightliner-cascadia-cummins-isx15/Fri, 11 Sep 2026 00:00:00 GMTUsed pricing varies; see sources. Biggest documented cost risk: the fuel pump, the most common complaint across model years. Buy only after inspection. https://bigrigrisk.com/trucks/kenworth-t680-cummins-x15/https://bigrigrisk.com/trucks/kenworth-t680-cummins-x15/Fri, 11 Sep 2026 00:00:00 GMTOne observed listing at $12,000, a thin comp set. Biggest documented cost risk: the fuel pump, the most common complaint. Buy only after inspection. https://bigrigrisk.com/trucks/peterbilt-579-cummins-x15/https://bigrigrisk.com/trucks/peterbilt-579-cummins-x15/Fri, 11 Sep 2026 00:00:00 GMTOne observed listing at $9,000, a thin comp set. Biggest documented cost risk: the fuel pump, the most common complaint. Buy only after inspection. https://bigrigrisk.com/trucks/peterbilt-389-cummins-x15/https://bigrigrisk.com/trucks/peterbilt-389-cummins-x15/Fri, 11 Sep 2026 00:00:00 GMTUsed Peterbilt 389: $79,950–$149,950 observed used across 15 listings. The documented cost risk to price in: roadside coolant leaks and injectors at about $1,000 each. Buy only after inspection. https://bigrigrisk.com/trucks/volvo-vnl-760-volvo-d13/https://bigrigrisk.com/trucks/volvo-vnl-760-volvo-d13/Fri, 11 Sep 2026 00:00:00 GMTUsed Volvo VNL 760: $54,999–$74,950 observed used across 3 listings. The documented cost risk to price in: EGR system, Full engine. Buy only after inspection. https://bigrigrisk.com/trucks/international-lt-cummins-x15/https://bigrigrisk.com/trucks/international-lt-cummins-x15/Fri, 11 Sep 2026 00:00:00 GMTUsed International LT: $39,950–$101,500 observed used across 3 listings. The documented cost risk to price in: the fuel pump, the most common X15 complaint. Buy only after inspection. https://bigrigrisk.com/trucks/international-prostar-cummins-isx15/https://bigrigrisk.com/trucks/international-prostar-cummins-isx15/Fri, 11 Sep 2026 00:00:00 GMTUsed International ProStar: $16,950–$70,904 observed used across 15 listings. The documented cost risk to price in: a possible full ISX rebuild and an active oil pan leak. Buy only after inspection. https://bigrigrisk.com/trucks/mack-anthem-mack-mp8/https://bigrigrisk.com/trucks/mack-anthem-mack-mp8/Fri, 11 Sep 2026 00:00:00 GMTUsed pricing varies; see sources. Biggest documented cost risk: turbo and actuator failure with DPF fouling. Buy only after inspection. https://bigrigrisk.com/trucks/mack-pinnacle-mack-mp8/https://bigrigrisk.com/trucks/mack-pinnacle-mack-mp8/Fri, 11 Sep 2026 00:00:00 GMTThe MP8's known money pits are the injector cups and the aftertreatment: a full injector cup job runs $1,500–$2,500, camshaft work $4,000–$7,000, and a full aftertreatment replacement can top $5,000. Check for cup-seal coolant leaks and regen/NOx faults before buying. https://bigrigrisk.com/trucks/western-star-49x-detroit-dd15/https://bigrigrisk.com/trucks/western-star-49x-detroit-dd15/Fri, 11 Sep 2026 00:00:00 GMTUsed Western Star 49X: $82,250–$119,900 observed used across 3 listings. The documented cost risk to price in: repeat dealer repairs on 2022 units and the DD15 EGR valve and cooler. Buy only after inspection. https://bigrigrisk.com/trucks/kenworth-t660-cummins-isx15/https://bigrigrisk.com/trucks/kenworth-t660-cummins-isx15/Fri, 11 Sep 2026 00:00:00 GMTUsed Kenworth T660: $22,900–$69,950 observed used across 4 listings. The documented cost risk to price in: injectors at about $1,000 each and loss of power. Buy only after inspection. https://bigrigrisk.com/trucks/volvo-vnl-670-volvo-d13/https://bigrigrisk.com/trucks/volvo-vnl-670-volvo-d13/Fri, 11 Sep 2026 00:00:00 GMTUsed Volvo VNL 670: $4,900–$39,900 observed used across 6 listings. The documented cost risk to price in: Crankcase pressure sensor, EGR system. Buy only after inspection. https://bigrigrisk.com/trucks/international-lonestar-cummins-x15/https://bigrigrisk.com/trucks/international-lonestar-cummins-x15/Fri, 11 Sep 2026 00:00:00 GMTUsed International LoneStar: $31,000–$139,900 observed used across 3 listings. Buy only after inspection. https://bigrigrisk.com/trucks/paccar-mx-13/https://bigrigrisk.com/trucks/paccar-mx-13/Fri, 11 Sep 2026 00:00:00 GMTA capable Paccar engine, but the emissions hardware is where the money goes: budget an EGR cooler at $2,200–$2,800, a turbocharger at $3,500–$4,500 (incl. labor), and an eventual DPF replacement at $4,000–$6,000, with injectors $400–$800 each. Inspect the aftertreatment and injector history before buying. https://bigrigrisk.com/trucks/kenworth-w990/https://bigrigrisk.com/trucks/kenworth-w990/Fri, 11 Sep 2026 00:00:00 GMTDocumented failure points and real market prices for the Kenworth W990, sourced and dated. https://bigrigrisk.com/trucks/peterbilt-567/https://bigrigrisk.com/trucks/peterbilt-567/Fri, 11 Sep 2026 00:00:00 GMTDocumented failure points and real market prices for the Peterbilt 567, sourced and dated. https://bigrigrisk.com/trucks/volvo-vnr/https://bigrigrisk.com/trucks/volvo-vnr/Fri, 11 Sep 2026 00:00:00 GMTDocumented failure points and real market prices for the Volvo VNR, sourced and dated. https://bigrigrisk.com/trucks/international-rh-series/https://bigrigrisk.com/trucks/international-rh-series/Fri, 11 Sep 2026 00:00:00 GMTDocumented failure points and real market prices for the International RH Series, sourced and dated. https://bigrigrisk.com/trucks/mack-granite-mack-mp8/https://bigrigrisk.com/trucks/mack-granite-mack-mp8/Fri, 11 Sep 2026 00:00:00 GMTDocumented failure points and real market prices for the Mack Granite, sourced and dated. https://bigrigrisk.com/trucks/kenworth-t880/https://bigrigrisk.com/trucks/kenworth-t880/Fri, 11 Sep 2026 00:00:00 GMTDocumented failure points and real market prices for the Kenworth T880, sourced and dated. https://bigrigrisk.com/trucks/peterbilt-379/https://bigrigrisk.com/trucks/peterbilt-379/Fri, 11 Sep 2026 00:00:00 GMTDocumented failure points and real market prices for the Peterbilt 379, sourced and dated. https://bigrigrisk.com/trucks/peterbilt-348/https://bigrigrisk.com/trucks/peterbilt-348/Fri, 11 Sep 2026 00:00:00 GMTDocumented failure points and real market prices for the Peterbilt 348, sourced and dated. Note: no 348-specific failure documentation exists publicly; the risks below are drawn from a Kenworth T880 vocational-duty guide (a PACCAR-sibling vocational chassis) and are disclosed as a cross-model proxy, not confirmed 348-specific. https://bigrigrisk.com/trucks/kenworth-w900/https://bigrigrisk.com/trucks/kenworth-w900/Fri, 11 Sep 2026 00:00:00 GMT$59,950–$209,950 observed used across 6 comps, and price tracks mileage. High-mile (455k–655k) trucks land $89k–$175k, low-mile late units $175k–$230k. The W900 shell is sold across many engine specs, so buy on the specific engine (ISX15 / legacy C15) and driveline, not the badge. https://bigrigrisk.com/trucks/freightliner-m2-106/https://bigrigrisk.com/trucks/freightliner-m2-106/Fri, 11 Sep 2026 00:00:00 GMTDocumented failure points and real market prices for the Freightliner M2 106, sourced and dated. https://bigrigrisk.com/trucks/international-durastar/https://bigrigrisk.com/trucks/international-durastar/Fri, 11 Sep 2026 00:00:00 GMTDocumented failure points and real market prices for the International DuraStar, sourced and dated. https://bigrigrisk.com/trucks/kenworth-t370/https://bigrigrisk.com/trucks/kenworth-t370/Fri, 11 Sep 2026 00:00:00 GMTDocumented failure points and real market prices for the Kenworth T370, sourced and dated. https://bigrigrisk.com/trucks/western-star-4700/https://bigrigrisk.com/trucks/western-star-4700/Fri, 11 Sep 2026 00:00:00 GMTDocumented failure points and real market prices for the Western Star 4700, sourced and dated. https://bigrigrisk.com/trucks/freightliner-114sd/https://bigrigrisk.com/trucks/freightliner-114sd/Fri, 11 Sep 2026 00:00:00 GMTDocumented failure points and real market prices for the Freightliner 114SD, sourced and dated. https://bigrigrisk.com/trucks/international-hx-series/https://bigrigrisk.com/trucks/international-hx-series/Fri, 11 Sep 2026 00:00:00 GMTDocumented failure points and real market prices for the International HX Series, sourced and dated. https://bigrigrisk.com/trucks/kenworth-t800/https://bigrigrisk.com/trucks/kenworth-t800/Fri, 11 Sep 2026 00:00:00 GMTDocumented failure points and real market prices for the Kenworth T800. https://bigrigrisk.com/trucks/freightliner-columbia/https://bigrigrisk.com/trucks/freightliner-columbia/Fri, 11 Sep 2026 00:00:00 GMTDocumented failure points (component-level, see note) and real market prices for the Freightliner Columbia. Note: no Columbia-specific failure documentation exists publicly; the risks below are documented failures of components commonly spec'd in Columbias (Eaton Fuller transmission, Meritor axles, Haldex ABS), disclosed as component-level evidence rather than model-specific. https://bigrigrisk.com/trucks/western-star-4900/https://bigrigrisk.com/trucks/western-star-4900/Fri, 11 Sep 2026 00:00:00 GMTNHTSA 11V207000 (ENGINE): Cat C15 combustion-tube weld may burn through — fire risk (MY2008–2010) https://bigrigrisk.com/trucks/kenworth-t600/https://bigrigrisk.com/trucks/kenworth-t600/Fri, 11 Sep 2026 00:00:00 GMTNHTSA 11V203000 / 07V279000 / 05V570000 / 08V487000 (ENGINE / ENGINE:DIESEL) https://bigrigrisk.com/trucks/caterpillar-c15/https://bigrigrisk.com/trucks/caterpillar-c15/Fri, 11 Sep 2026 00:00:00 GMTNHTSA 11V207000 (ENGINE): C15 combustion-tube weld may burn through — fire (Cat 11E-006) https://bigrigrisk.com/trucks/detroit-dd13/https://bigrigrisk.com/trucks/detroit-dd13/Fri, 11 Sep 2026 00:00:00 GMTNHTSA 11V287000 / 10V339000 (FUEL PUMP): DD13/DD15 Bosch high-pressure fuel pump crack — fuel leak https://bigrigrisk.com/guides/what-dot-inspection-checks-used-truck/https://bigrigrisk.com/guides/what-dot-inspection-checks-used-truck/Thu, 10 Sep 2026 00:00:00 GMTA used Class 8 truck cannot legally be run unless it passed a DOT periodic inspection in the last 12 months. What Appendix A actually rejects, and why "needs a little work" can mean out-of-service. The federal standard, quoted. https://bigrigrisk.com/guides/california-emissions-wall-used-trucks/https://bigrigrisk.com/guides/california-emissions-wall-used-trucks/Sun, 06 Sep 2026 00:00:00 GMTCalifornia denies registration to diesel trucks over 14,000 lbs GVWR without a 2010-or-newer engine, and its new Clean Truck Check reaches out-of-state trucks too. What that does to pre-emissions truck values, verified from CARB's own pages. https://bigrigrisk.com/guides/m2-106-vs-durastar/https://bigrigrisk.com/guides/m2-106-vs-durastar/Sun, 06 Sep 2026 00:00:00 GMTThe two most common used medium-duty work trucks in America, compared on documented failure modes and real dealer prices. The DuraStar is cheaper, and the MaxxForce engine is a big part of why.