You just picked up a 2018 Model 3, and everything about the driving experience blows you away — except one thing. Pop the trunk at night, and you’re squinting into a dark void, fumbling around for grocery bags or your charging cable. The stock trunk light is barely there. You know an upgrade exists, but you’re stuck deciding: do you live with what Tesla gave you, or spring for an aftermarket trunk ambient lighting strip that actually lights up the space? Let’s break down exactly what you’re working with and whether the upgrade is worth it.
Quick Verdict:
Pick the stock trunk light if you rarely use your trunk at night and don’t want to add anything extra to your interior.
Pick an aftermarket trunk ambient lighting strip if you regularly load/unload in low light, want that premium 360° glow, and need a 5-minute upgrade that requires zero tools.
Side-by-Side: Stock Trunk Light vs. Aftermarket Ambient Lighting Strip
| Feature | Stock Tesla Trunk Light | Aftermarket Ambient Lighting Strip |
|---|---|---|
| Light Coverage | Single point source, narrow beam | 360° soft LED, full trunk illumination |
| Installation | Pre-installed, no action needed | 5 minutes, plug & play via cigarette lighter |
| Compatibility | Model 3 (2018+) | Model 3 & Model Y (2017–2024) |
| Waterproof | No (fixture only) | Yes |
| Power Source | Hardwired to trunk circuit | 12V cigarette lighter (no wiring) |
| Impact on Battery | Negligible | Negligible |
| Tools Required | N/A | None |
Build Quality and Materials
The stock light on a 2018 Model 3 is exactly what you’d expect from an afterthought. Tesla’s minimalist philosophy extends to the trunk, where they placed a single small LED fixture on the left side. It works, technically. But if you’ve ever tried to find a black laptop bag in a dark trunk, you know the pain. The light creates harsh shadows, and anything past the center of the trunk is basically invisible.
Aftermarket ambient lighting strips like the
AutoTul Trunk Ambient Lighting Strip take a different approach entirely. The 360° soft LED design wraps light around the trunk perimeter, eliminating those frustrating dark corners. The build quality on these strips has improved significantly — they’re waterproof, flexible, and designed to match Tesla’s interior aesthetic rather than look like an afterthought bolt-on. The wood-grain and matte finishes available complement the Model 3’s cabin.
Installation Difficulty
This is where aftermarket wins by a mile, and it’s not even close. On a r/TeslaModel3 thread about trunk lighting, owners have noted that the stock light is often underpowered from day one — but swapping it requires some disassembly. Aftermarket LED strips that plug into the 12V cigarette lighter in the trunk? Literally 5 minutes. No tools. No wire splicing. No anxiety about voiding your warranty.
I installed one on my own Model 3 last year. Plug it in, route the strip along the trunk lip, press the adhesive, done. The hardest part was deciding how evenly to space the strip. If you can plug in a phone charger, you can install this. On the difficulty scale, it’s a solid 1 out of 5.
Compatibility: Model 3 vs. Model Y
Here’s something new owners often miss: the stock trunk light setup differs slightly between Model 3 and Model Y. The Model Y has a slightly larger trunk and a different fixture position, but the same weak output problem. The 2018 Model 3 specifically uses Tesla’s earlier trunk design, which actually makes aftermarket lighting easier to install because there’s more accessible space around the trunk lip.
Premium aftermarket strips are designed to fit both the Model 3 and Model Y across model years 2017 through 2024. So if you upgrade from a 2018 Model 3 to a Model Y down the road, your lighting strip moves with you. That cross-compatibility adds real long-term value that a stock part simply can’t match.
Price vs. Value
The stock trunk light cost you exactly $0 extra — it came with the car. But it also doesn’t do its job well. An aftermarket ambient lighting strip runs under $30 typically, which puts it in “no-brainer” territory for most Tesla owners. When you consider that you’ll use your trunk hundreds of times per year, and that many of those uses happen in low-light conditions (parking garages, nighttime grocery runs, early morning road trips), the per-use cost drops to fractions of a cent.
As one owner put it on r/TeslaMotors, the trunk lighting issue is “the one thing Tesla cheaped out on that actually affects daily use.” Aftermarket strips fix that problem permanently for less than a tank of gas would cost in a traditional car.
When the Stock Trunk Light Is Actually Enough
Not everyone needs an upgrade. If you primarily use your trunk during the daytime — loading up at the grocery store in daylight, tossing in a gym bag after work in a well-lit garage — the stock light handles those moments fine. It’s dim, but it’s functional when ambient light is already available. If your 2018 Model 3 is a weekend car or you simply don’t load cargo frequently, living with the stock setup is perfectly reasonable. Save that $30 for something else.
The stock light also makes sense if you’re a “keep it factory” purist. Some Tesla owners want zero aftermarket additions, and that’s a valid philosophy. Tesla designed the trunk to work with that single light, and it technically does.
When the Aftermarket Lighting Strip Wins
If you’ve ever stood outside your Model 3 at 10 PM, phone flashlight in one hand, digging through the trunk with the other — you need the upgrade. The ambient lighting strip transforms the trunk from a dark cave into a properly lit cargo space. Parents loading strollers, professionals grabbing equipment, anyone who uses their Model 3 as a daily driver — this is for you.
The waterproof design also matters more than people realize. Wet umbrellas, damp sports gear, leaky grocery bags — trunk lighting needs to handle moisture. Stock Tesla trunk lights aren’t waterproof. Aftermarket strips designed for automotive use are.
Another scenario: if you’re buying a gift for a Tesla owner. The trunk ambient lighting strip is one of those accessories people don’t buy themselves but absolutely love receiving. It’s practical, looks premium, and shows you actually understand what Tesla ownership is like. We wrote more about smart accessory picks for Tesla owners if you need other ideas.
Other 2018 Model 3 Accessories Worth Considering Early On
While trunk lighting is probably the most immediate quality-of-life fix, new Model 3 owners often discover a few other gaps quickly. If you spend time in your car during lunch breaks, waiting at Superchargers, or on road trips, a portable car table becomes surprisingly useful. Something like the
AutoTul Tesla Table gives you a stable, 360° rotating surface for your laptop, meals, or coffee — it’s one of those “didn’t know I needed it until I had it” additions.
But for pure bang-for-buck, trunk lighting is the first upgrade I’d recommend to any new 2018 Model 3 owner. It costs the least, takes the least effort, and solves the most frequently experienced annoyance.
Frequently Asked Questions
Does adding an aftermarket trunk light drain the Tesla’s 12V battery?
Modern LED trunk lighting strips draw extremely low power — typically under 1 amp. Compared to the vampire drain that all Teslas experience from their always-on systems, the additional draw from a trunk LED strip is negligible. You won’t notice any measurable impact on your 12V battery or your main traction battery. Several owners on r/TeslaModelY have reported running trunk LED strips for over a year with zero battery issues.
Can I use both the stock trunk light and an aftermarket LED strip at the same time?
Absolutely, and most owners do exactly that. The stock light stays hardwired to the trunk lid circuit (it turns on when you open the trunk), while the aftermarket strip plugs into the 12V cigarette lighter in the trunk area. They operate independently. Some owners leave the aftermarket strip on all the time as ambient lighting, while others wire it to a switch. Using both together gives you the maximum possible trunk illumination.
Will installing a trunk LED strip affect my Tesla warranty?
No. Plug-and-play accessories that connect via the 12V cigarette lighter don’t require any modification to your vehicle’s electrical system. No wires are cut, no panels are permanently modified, and no factory components are removed. Tesla’s warranty cannot be voided by adding non-invasive accessories. If you ever need to return the car to fully stock condition, you simply unplug and peel off the strip.
Do aftermarket trunk lights fit the 2018 Model 3 specifically, or only newer versions?
The 2018 Model 3 is fully compatible with most aftermarket trunk ambient lighting strips. In fact, the 2018 model year has slightly more accessible trunk lip space than some later revisions, making installation even easier. Just verify that the product you choose lists Model 3 compatibility for 2017–2024 model years.
What’s the best trunk lighting option if I also own a Model Y?
Since premium trunk ambient lighting strips are designed to fit both Model 3 and Model Y across 2017–2024, you can buy one product and use it in either vehicle. If you have both cars, pick up two strips — the installation is identical, and you’ll immediately notice the improvement in both trunks. The
AutoTul trunk lighting strip is built specifically for this dual compatibility.
The Bottom Line
For a 2018 Model 3 owner just getting started with Tesla, trunk lighting is the single highest-impact, lowest-effort upgrade you can make. The stock light is a known weakness across all Model 3 years, and the aftermarket solution is cheap, fast, and reversible. If your trunk is dark — and it almost certainly is — a 360° ambient LED strip is the fix. The
AutoTul Trunk Ambient Lighting Strip checks every box: plug-and-play installation, waterproof construction, Model 3 and Model Y compatibility, and that premium soft glow that makes your trunk actually usable at night. Five minutes of installation, years of better cargo access.
