> For the complete documentation index, see [llms.txt](https://legacydmc.gitbook.io/chaser/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://legacydmc.gitbook.io/chaser/get-exports/chaser_getefficiency.md).

# chaser\_getefficiency

Returns a the engine efficiency (power to weight ratio) in g’s / kg as a float

Args:

```lua
averageacc -- The average acceleration from chaser_getavgacc()
weight -- The weight you'd like to calculate the efficiency ratio for.
```