G80 Taillights: What to Know Before Upgrading the Back of Your M3

Most of the arguments about the G80 M3 are about the front and that grille. Hardly anyone talks about the back. Walk around one in a parking lot, though, and the stock taillights are honestly the most forgettable part of the car. Nothing's wrong with them. They're just plain. So it's no surprise that G80 taillights are one of the first things owners swap out.

If you're thinking about it, here's what we'd tell a friend.

Will G80 Taillights Fit My Car?

The M3 sedan uses the same taillight shape as the G20 3 Series sedan, which is why most aftermarket sets are labeled "G20/G80" and fit either car. On the 3 Series side, listings usually cover about 2019 to 2024. For the M3, it's 2021 onward.

Now, the M4. The G82 coupe shares its lights with the G22 4 Series, not with the M3. So M3 lights won't go on an M4, and the other way round too. People mix these up all the time, so check your body style before anything else.

The Different Looks You Can Get in G80 Taillights

CSL-Style Laser

These copy the factory laser lights from the M4 CSL, with thin, sharp lines of light that look very current. It's probably the style people ask about most when they see one at a meet.

GTS-Style OLED

This one goes back to the older M4 GTS. OLED gives a layered, almost 3D look when it's lit, and a lot of these sets come with sequential turn signals too. BavGruppe Designs carries GTS OLED-style taillights for some BMWs, so it's worth a look if that's your style.

Smoked LED or Clear

On a black, Frozen Grey or Isle of Man Green M3, smoked lenses look right at home. The tint makes the back of the car look darker and a little lower. The downside shows up on sunny days, when heavily smoked lights can be hard for the driver behind you to see. White and Brooklyn Grey cars are a different story. Clear lenses usually suit them better and keep the rear looking crisp.

A Few Things to Check First

Coding is the big one. Some sets use the factory plugs and work as soon as they're connected. Others need a quick coding change, or you'll get a lamp warning on the dash, or sequential indicators that flash all at once. Most product pages mention this. If yours doesn't, email the seller before paying.

Late cars need one more check. BMW updated the 3 Series in 2023 (the LCI), and while most aftermarket lights cover both versions, it's worth confirming with the seller for a 2023 or 2024 build.

Lighting laws differ between states, and police pay more attention to tinted rear lights than clear ones. Check your local rules first. Don't sell the original lights straight away either. Buyers like seeing them included, and they're the easy fix if the car has to go back to stock for an inspection or the end of a lease.

Is Fitting G80 Taillights a Big Job?

No. There are two lamps per side, an outer one in the body and an inner one in the trunk lid. Peel back the trunk lining, take off a few nuts, unplug the connector and lift the lamp out. With basic hand tools, most owners finish both sides in an afternoon. When coding is needed, an OBD adapter and the BimmerCode app usually take care of it.

Worth It?

For most M3 owners, yes. Other drivers see the back of your car far more often than the front, so a fresh set of G80 taillights makes a noticeable difference for the money. Decide on the look, double-check that you have the sedan and not the coupe, and find out whether coding is needed. You can compare the current range of G80 taillights at BavGruppe Designs.