PETG vs ABS vs ASA: Best Filaments for 3D Printed Car Parts
Printing parts for your car is different than printing a desk toy. The inside of a car parked in the summer sun can easily reach 70°C (158°F). If you print a cup holder in standard PLA, it will melt and warp within days.
Here is the ultimate breakdown of the best filaments for automotive use.
1. PETG (Polyethylene Terephthalate Glycol)
PETG is the most popular upgrade from PLA. It is highly impact-resistant and flexible.
- Heat Resistance: Up to 80°C.
- Best For: Interior clips, cup holders, and brackets that aren't exposed to direct dashboard sunlight.
- Ease of Printing: Very easy. Doesn't require an enclosure.
2. ABS (Acrylonitrile Butadiene Styrene)
ABS is the material used by actual car manufacturers (like your original dashboard).
- Heat Resistance: Up to 100°C.
- Best For: High-heat interior parts, radio bezels, and gauge pods.
- Ease of Printing: Hard. Requires a heated bed (100°C+) and an enclosed 3D printer to prevent warping and cracking.
3. ASA (Acrylonitrile Styrene Acrylate)
ASA is the younger, better brother of ABS.
- Heat Resistance: Up to 100°C.
- The Superpower: UV Resistance! Unlike ABS which turns yellow and brittle in the sun, ASA survives UV rays perfectly.
- Best For: Exterior car parts (grilles, mirror covers) and dashboard pods exposed to direct sunlight.
Final Verdict
If you are printing one of our BMW E46 center console inserts, PETG is the easiest and safest choice. If you are printing a Defi Gauge Pod for your dashboard, definitely use ASA.