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/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/trucks/kenworth-t800/https://bigrigrisk.com/trucks/kenworth-t800/Sun, 06 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/Sun, 06 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/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/trucks/peterbilt-389-cummins-x15/https://bigrigrisk.com/trucks/peterbilt-389-cummins-x15/Sat, 05 Sep 2026 00:00:00 GMTUsed Peterbilt 389: $79,950–$149,950 observed used across 15 listings. The documented cost risk to price in: Engine. Buy only after inspection. https://bigrigrisk.com/trucks/volvo-vnl-760-volvo-d13/https://bigrigrisk.com/trucks/volvo-vnl-760-volvo-d13/Sat, 05 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/Sat, 05 Sep 2026 00:00:00 GMTUsed International LT: $39,950–$101,500 observed used across 3 listings. The documented cost risk to price in: Generic diesel rebuild. Buy only after inspection. https://bigrigrisk.com/trucks/international-prostar-cummins-isx15/https://bigrigrisk.com/trucks/international-prostar-cummins-isx15/Sat, 05 Sep 2026 00:00:00 GMTUsed International ProStar: $16,950–$70,904 observed used across 15 listings. The documented cost risk to price in: Engine. Buy only after inspection. https://bigrigrisk.com/trucks/western-star-49x-detroit-dd15/https://bigrigrisk.com/trucks/western-star-49x-detroit-dd15/Sat, 05 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: 2022 Western Star, DD15 engine. Buy only after inspection. https://bigrigrisk.com/trucks/kenworth-t660-cummins-isx15/https://bigrigrisk.com/trucks/kenworth-t660-cummins-isx15/Sat, 05 Sep 2026 00:00:00 GMTUsed Kenworth T660: $22,900–$69,950 observed used across 4 listings. The documented cost risk to price in: Loss, Engine. Buy only after inspection. https://bigrigrisk.com/trucks/volvo-vnl-670-volvo-d13/https://bigrigrisk.com/trucks/volvo-vnl-670-volvo-d13/Sat, 05 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/Sat, 05 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/kenworth-w990/https://bigrigrisk.com/trucks/kenworth-w990/Sat, 05 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/Sat, 05 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/Sat, 05 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/Sat, 05 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/Sat, 05 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/Sat, 05 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/Sat, 05 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/Sat, 05 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/freightliner-m2-106/https://bigrigrisk.com/trucks/freightliner-m2-106/Sat, 05 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/Sat, 05 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/Sat, 05 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/Sat, 05 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/Sat, 05 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/Sat, 05 Sep 2026 00:00:00 GMTDocumented failure points and real market prices for the International HX Series, sourced and dated. https://bigrigrisk.com/guides/blue-book-for-semi-trucks/https://bigrigrisk.com/guides/blue-book-for-semi-trucks/Sat, 05 Sep 2026 00:00:00 GMTNo free KBB-style lookup exists for Class 8 trucks. Every real valuation guide is a paid professional subscription. Here is what actually exists, what RigDig really is, and what a regular buyer can use instead. https://bigrigrisk.com/guides/first-truck-owner-operator/https://bigrigrisk.com/guides/first-truck-owner-operator/Sat, 22 Aug 2026 00:00:00 GMTThe math that separates a good deal from a disaster. Engine family, rebuild cost if it comes due, and the margin you need to carry the risk. https://bigrigrisk.com/guides/used-isx15-x15-truck-buying-math/https://bigrigrisk.com/guides/used-isx15-x15-truck-buying-math/Fri, 21 Aug 2026 00:00:00 GMTWhich Cummins years carry the ceramic-plunger fuel pump risk, what a rebuild actually costs in parts, and the pre-purchase checks that protect your livelihood. https://bigrigrisk.com/guides/dd15-vs-x15/https://bigrigrisk.com/guides/dd15-vs-x15/Fri, 21 Aug 2026 00:00:00 GMTThe Detroit DD15 and Cummins X15 sit in the same frame and fail in different directions. What each one actually does wrong, what is priced, and what nobody can price yet. https://bigrigrisk.com/guides/international-a26/https://bigrigrisk.com/guides/international-a26/Fri, 21 Aug 2026 00:00:00 GMTA multi-cylinder misfire on an A26 traced back to a single failed injector. That diagnostic is the strongest A26 evidence we have. The million-mile reliability claim has none. https://bigrigrisk.com/guides/mack-mp8-anthem/https://bigrigrisk.com/guides/mack-mp8-anthem/Fri, 21 Aug 2026 00:00:00 GMTAn owner filmed every line of a turbo, actuator, and DPF failure on his Anthem. The mechanical work was barely two-thirds of the bill. Here is the rest of it, the market pricing, and what to check. https://bigrigrisk.com/guides/mx13-what-we-know/https://bigrigrisk.com/guides/mx13-what-we-know/Fri, 21 Aug 2026 00:00:00 GMTThe MX-13 powers Kenworths and Peterbilts, but the public failure record is nearly empty. Here is the one documented breakdown we have, and why most MX-13 numbers you will find online are not MX-13 numbers. https://bigrigrisk.com/guides/volvo-d13-ishift/https://bigrigrisk.com/guides/volvo-d13-ishift/Fri, 21 Aug 2026 00:00:00 GMTThe D13 spends most of its life costing steady, predictable money around 500K miles. Then there is the failure that does not. What breaks, what one full overhaul actually invoiced, and what to inspect. https://bigrigrisk.com/guides/cascadia-vs-t680-vs-579/https://bigrigrisk.com/guides/cascadia-vs-t680-vs-579/Fri, 21 Aug 2026 00:00:00 GMTThree chassis that can all carry the same Cummins X15. What our evidence supports about the comparison, and the large parts of it we cannot price. https://bigrigrisk.com/guides/aftertreatment-costs/https://bigrigrisk.com/guides/aftertreatment-costs/Fri, 21 Aug 2026 00:00:00 GMTEGR, DPF and SCR generate the most complaints in our record set. Here are the repair figures we can source, the one complete invoice we have, and the numbers we refuse to make up. https://bigrigrisk.com/guides/emissions-deletes-risk/https://bigrigrisk.com/guides/emissions-deletes-risk/Fri, 21 Aug 2026 00:00:00 GMTWhy owner-operators delete emissions systems, what a working mechanic says about it on camera, and the practical traps a deleted truck hands the next buyer. https://bigrigrisk.com/guides/fault-code-pull/https://bigrigrisk.com/guides/fault-code-pull/Fri, 21 Aug 2026 00:00:00 GMTHeavy trucks do not report codes the way cars do. What an SPN and FMI readout is, what stored codes tell you that the dash light does not, and the documented case where the code was worse than the problem. https://bigrigrisk.com/guides/inframe-rebuild-cost-truth/https://bigrigrisk.com/guides/inframe-rebuild-cost-truth/Fri, 21 Aug 2026 00:00:00 GMTWhat rebuild kits actually cost, what one documented in-frame add-on ran, and what a $34,090.58 dealer invoice was really for. https://bigrigrisk.com/guides/glider-kits-explainer/https://bigrigrisk.com/guides/glider-kits-explainer/Fri, 21 Aug 2026 00:00:00 GMTWhat a glider kit is, what our evidence set does and does not document about them, and why the glider question shows up as a pricing problem long before it shows up as a regulatory one.