# Combustion road vehicles and Steel

Their prices have moved together.

Source page: https://www.materialinsights.org/links/combustion-road-vehicles-and-steel/

[Combustion road vehicles](https://www.materialinsights.org/energy/e_road_ice/) (energy) and [Steel](https://www.materialinsights.org/commodities/steel/) (commodity): 1 relationship.

## How they are linked

### 1. Price link: body material

*Cost and price · Weak · Both ways*

Car bodies and frames are mostly steel, but the vehicle index does not follow it, with monthly moves correlating at -0.16. Carmakers buy steel on annual contracts and change prices with model years, so metal costs are hidden in margins.

- **-0.16** monthly change correlation
- **-0.01** 12-month change correlation
- **0.23** fitted elasticity

Built from the site data on production routes, energy flows, industry value chains, input-output tables and prices.