Emissions tests in every state › Louisiana
Louisiana emissions testLouisiana: LDEQ emissions inspection
Will your car pass Louisiana's emissions test? For cars from 1996 on, the station plugs into your car and reads the same things Athena OBD reads, so you can know before you go.
Where
Ascension, East Baton Rouge, Iberville, Livingston, West Baton Rouge parishes; every year with safety sticker
Which cars
1996+ plug-in test; vehicles exempt from plug-in test for 2 years from model year
What it takes to pass
- The check engine light must work and be off, with no fault stored that turns it on.
- Cars from 2001 on: one of the car's self-tests may be unfinished.
- Cars from 1996 to 2000: up to 2 of the car's self-tests may be unfinished.
- Just reset the codes or changed the battery? The self-tests start over: drive normally for a few days, in town and on the highway, before you go.
Louisiana doesn't publish every detail of its rules, so the self-test limits above are the federal rule most states follow.
Check your car's year
A guide, not a guarantee: stations also check things Athena OBD can't (the gas cap, paperwork), and rules change. Checked against Louisiana's sources in October 2026.
Drive a BMW?
Athena OBD reads the engine codes every car shares. Our sister app, AutoLingo for BMW, goes much further on a BMW: the airbags, ABS, instrument cluster and body modules too, plus service resets, even on older E-chassis cars.
See AutoLingo for BMW