Index lookup · WPU1413
US PPI — Truck and Bus Bodies
Producer Price Index commodity data for truck and bus body manufacturing, the vehicle body structure mounted on a chassis, a transportation equipment input rather than a freight service price. Index base: December 1982 = 100.
Latest value is 1 month old. Next update expected around Sep 2026.
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Price history
Data & insights
Key figures
- From Jan 2024 to Aug 2026 the index went from 346.7 to 381.0, a change of +9.9%.
- Highest reading in that period: 381.0 in Jul 2026. Lowest: 346.7 in Jan 2024.
- Largest one-month rise: +1.7% in Aug 2024. Largest one-month fall: -0.3% in May 2024.
- The year-over-year change stayed within 10% either way in each of the last 20 months, so a 10% annual cap or floor would not have been reached.
Strongest average month-over-month move historically: January (+0.6% avg).
What this means for your clause
Fits a fleet-purchase or vehicle-upfitting contract buying truck or bus bodies as capital equipment rather than freight or transportation services pricing. Pair with a chassis or complete-vehicle series if the contract covers a finished truck rather than the body alone, since BLS prices bodies and chassis separately.
Draft a clause
A starting point citing this series by name and code. Replace the bracketed terms with your contract's actual scope before use.
The [affected portion] of the Contract Price shall be adjusted using US PPI — Truck and Bus Bodies (BLS series WPU1413), published by BLS. Base Period: the index value published for August 2026 (or the month of contract signing, if different) is the Base Value. Adjustment: at each Adjustment Date, the Current Value is the most recently published three-month average of the index (the Averaging Window). The Escalation Factor equals Current Value divided by Base Value. Cap: the Escalation Factor applied under this clause shall not exceed 1.10 or fall below 0.90 (a 10% cap and floor) in any single Adjustment Date, regardless of the index's actual movement. [Replace bracketed terms with your contract's actual affected-portion definition and adjustment-date schedule before use. This is a drafting starting point, not legal advice.]
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