# Autocatalysts and Combustion road vehicles

Their prices have moved together.

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

[Autocatalysts](https://www.materialinsights.org/chemicals/autocatalysts/) (chemical) and [Combustion road vehicles](https://www.materialinsights.org/energy/e_road_ice/) (energy): 1 relationship.

## How they are linked

### 1. Price link: main demand

*Cost and price · Moderate · Both ways*

Petrol and diesel vehicles are the reason autocatalysts exist, and tighter norms such as India's BS-VI raised metal loadings. The vehicle proxy is a car price index, which tracks pricing rather than output, so monthly moves correlate at -0.15.

- **-0.15** monthly change correlation
- **-0.32** 12-month change correlation
- **-1.04** fitted elasticity

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