# What filament should I use for a car interior?

For a part that sits in a car, use ASA, not PLA. Prusa rates ASA for temperature resistance up to 93 °C and for outdoor UV, which is the combination a closed cabin in the sun actually is.

A car interior is an outdoor heat problem with extra UV through the glass. That is why ASA outranks PETG even though PETG is the spool more printers can finish.

Updated 2026-10-14. Sources accessed 2026-10-14. Use case: Automotive.

## Ranked filaments

| Rank | Filament | Nozzle | Bed | Price per kg |
| --- | --- | --- | --- | --- |
| 1 | Bambu Lab ASA | 235–260 °C | 90–110 °C | Not listed |
| 2 | Prusament ASA | 250–270 °C | 100–120 °C | Not listed |
| 3 | Prusament PETG | 240–260 °C | 70–90 °C | Not listed |
| 4 | Polymaker Polylite ABS | 230–260 °C | 90–110 °C | Not listed |

## What the community says

The recurring r/3Dprinting question is a packout insert or a clip left in a vehicle. The answers say PLA will deform, PETG sometimes survives and sometimes warps, and ASA is the material they wish they had printed once an enclosed printer is available. Nobody in those threads treats a brass-nozzle PLA profile as a car profile.

## Sources

- [ASA, Prusa Knowledge Base](https://help.prusa3d.com/article/asa_1809) (manufacturer)
- [ABS, Prusa Knowledge Base](https://help.prusa3d.com/article/abs_2058) (manufacturer)
- [PLA, Prusa Knowledge Base](https://help.prusa3d.com/article/pla_2062) (manufacturer)
- [Bambu Lab ASA technical data sheet](https://cdn.shopify.com/s/files/1/0645/5876/0155/files/Bambu_ASA_Technical_Data_Sheet.pdf) (datasheet)
- [PETG or ASA for inserts left in a work vehicle, r/3Dprinting](https://www.reddit.com/r/3Dprinting/comments/1u0x4zs/petg_or_asa_for_milwaukee_packout_inserts_that/) (reddit)
- [Which filament for an outdoor automotive part?, r/3Dprinting](https://www.reddit.com/r/3Dprinting/comments/vsc1ac/which_filament_for_an_outdoor_automotive_part/) (reddit)

HTML: https://filamentfacts.com/answers/car-interior