You pop the trunk on a Mazda MX-5, sold as the Miata in North America. The lid swings up. The space looks smaller than the photos promised.
That moment decides a lot. Can two people leave for a long weekend? Will your carry-on fit under the lid? Does a folding hardtop steal room?
Spec sheets reduce Miata trunk space to one number in cubic feet. That number changes with every generation. It also predicts far less than you think. The shape of the opening matters more, and so does the luggage you bring.
This guide starts with the published figures for the NA, NB, NC and ND. Then it gets practical. You will see real bags measured against a real trunk. You will get a packing method drawn from owners’ published advice. And you will know when to add storage outside the trunk.
In short: Miata trunk space ranges from 3.6 cubic feet in the NA to 5.3 cubic feet in the NC. Mazda rates the current ND soft top at 4.59 cubic feet and the RF at 4.48. Shape matters more than volume. A 26-inch checked bag barely fits, two carry-ons fit only stacked, and a golf bag will not lie flat. Soft bags work best.
This page covers trunk space, fit and packing across all four generations. For the full first-versus-second-generation comparison, see our NA vs NB Miata guide.
Last verified: October 2026
Still choosing between generations?
Start with our complete Mazda Miata guideHow Much Trunk Space Does a Miata Have?
Trunk volume by generation
3.6 to 5.3cu ft
Every redesign moved the number. The newest Miata is not the roomiest on paper, and the oldest is the tightest by far.
Spare tire and battery live in the trunk. Smallest figure of all.
Both moved under a flat floor. A big jump in usable space.
Largest on paper. The folding hardtop leaves it untouched.
Less volume, reshaped by Mazda for two weekend bags.
Read it as a ranking, not a fit guide.Data: Kelley Blue Book, Mazda spec deck
The honest answer is: it depends on the generation. Mazda reshaped the trunk with every redesign. The numbers did not always move in the direction you would expect.
The first Miata was the tightest. The third was the roomiest on paper. The current car sits in between, despite being the newest design.
Kelley Blue Book keeps period specifications for each model year. According to Kelley Blue Book (1992 MAZDA MX-5 Miata Price, Value, Depreciation & Reviews), the NA holds 3.6 cubic feet. The same KBB pages list 5.1 cubic feet for the 1999 NB. The 2014 NC reaches 5.3 cubic feet. On paper, the NC carries almost half again as much as the original car.
For the current car, Mazda publishes its own figure. According to Mazda's 2025 MX-5 Soft Top & RF Spec Deck, the soft top holds 4.59 cubic feet. The RF is listed at 4.48 cubic feet. On paper, the RF gives up about a tenth of a cubic foot.
| Generation | US model years | Trunk volume |
|---|---|---|
| NA Miata | 1990 to 1997 | 3.6 cu ft |
| NB Miata | 1999 to 2005 | 5.1 cu ft |
| NC Miata | 2006 to 2015 | 5.3 cu ft |
| ND Miata soft top | 2016 to today | 4.59 cu ft |
| ND Miata RF | 2017 to today | 4.48 cu ft |
Volumes: Kelley Blue Book for the NA, NB and NC, Mazda for the ND soft top and RF.
Common mistake: reading this table as a fit guide
Profile type: a shopper narrows the search to an NC because 5.3 beats 4.59. The logic looks airtight. The car is bigger, so the trunk must swallow more.
Then the bags come out. Each one must first pass through the opening, then sit on a floor of a given shape. The spec sheet measured volume. It never measured either of those.
Use the table to rank generations roughly. Do not use it to decide whether your luggage fits. The next section explains why.
Why Cubic Feet Mislead in a Miata Trunk
Side section of a Miata trunk
Three things the spec sheet never measures
30sto read any trunk
- 1
OpeningThe gap between bumper lip and lid caps the tallest item you can load.
- 2
FloorFlat or broken up by a tire or battery. A broken floor calls for soft bags.
- 3
DepthThe vertical room above the floor is where your second bag will stack.
Bigger on paperNB and NC post the highest volume figures.
Shaped for real bagsMazda widened the ND opening and deepened the recess to take two weekend travel bags.
A cubic-foot rating measures the air inside the trunk. Your luggage is not air. It is a set of rigid or semi-rigid shapes that must pass through an opening first.
In a big sedan, that difference rarely matters. In a trunk this small, it decides everything.
The opening decides first
Mazda addressed this on the ND. Its 2019 press kit explains that the trunk was reshaped with a wider opening and a deeper recess. The stated goal was to carry two weekend travel bags.
Mazda adds that previous models could not do this. That is a manufacturer's claim, so read it as one. Still, it explains a paradox. The ND has fewer cubic feet than the NB or NC. Yet Mazda engineered it to take more of what people pack.
The lesson applies to every generation. Before you count cubic feet, look at the gap between the bumper and the lid. That gap is the real gatekeeper.
Depth decides what stacks
Once a bag is inside, the floor shape takes over. In a Miata, bags rarely sit side by side. They sit on top of each other.
Autoblog made this point by testing three cars with similar volumes. Its conclusion was blunt: shape, not volume, sets the ranking. Because the Miata relies on depth more than length or width, you end up stacking.
Stacking works for soft clothing bags. It works badly for anything rigid, fragile or tall. Keep that in mind before you buy luggage for the car.
How to read a trunk in thirty seconds
You can judge any Miata trunk before loading a single bag. Open the lid and look at three things, in this order.
First, the opening. Note the height between the bumper lip and the lid. That gap limits the tallest item you can carry.
Second, the floor. Is it flat, or does a tire or a battery break it up? A broken floor favors soft bags.
Third, the depth. Put your hand flat on the floor and look at the space above it. That vertical room is where your second bag will go.
MX5Global editorial view: the trunk is a poor reason to pick one generation over another. It is an excellent reason to pick your luggage. Most frustration comes from forcing a suitcase designed for an SUV into a roadster.
Miata Trunk Layout by Generation
Top view, lid removed
What sits under each lid
Dashed box: the space your bags actually get. Same car, four very different floors.
NA Miata
The spare tire bulges into the trunk and the battery fills the right rear corner.
Pack soft bags around the hump.
NB Miata
Spare and battery tucked under the carpet.
First flat load floor.
NC Miata
The folding hardtop drops into the well behind the seats.
PRHT keeps the full trunk.
ND Miata and RF
Wider opening, deeper recess, a repair kit instead of a spare.
Check what the kit covers.
Broken floor, soft bags only.Flat floor, more freedom. That single detail matters more than the volume figure.
Each generation hides its own quirks under the lid. Knowing them tells you how to pack before you even open the trunk.
The differences come from what Mazda put under the floor, and from how each roof folds away. Here is what changes from one Miata to the next.
NA Miata: packing around the spare and the battery
The original car gives up space to two components. The Autopian notes that the NA's spare tire bulges into the storage area. The battery takes the space under the right rear quarter panel.
That leaves an irregular floor. Soft bags mold around the spare. Hard cases rock on it. If you own or shop an NA Miata, plan your packing around that hump.
Case in point: an NA buyer reads 3.6 cubic feet and expects a tidy box. The real trunk is a box with a tire in it. Duffels and a tool roll fill it well. A square carry-on does not.
NB Miata: a flat floor at last
The second generation fixed the layout. According to the same Autopian piece, the NB tucks both the spare and the battery under the carpeted floor.
The result is a usable rectangle. The Autopian credits that change for a far more spacious trunk. If you shop an NB Miata, that flat floor matters more than the extra cubic feet.
NC Miata: a hardtop that costs no trunk space
The NC added the Power Retractable Hard Top, or PRHT. Folding hardtops on other cars often eat into the trunk. Mazda designed this one to avoid that.
Its 2010 release says the folded roof drops into the well behind the seats. The soft top uses that same well. Mazda presented it as a hardtop that does not compromise trunk space.
For a buyer, that removes one trade-off. If you want an NC Miata with a folding roof, you keep the full trunk.
ND Miata and RF: more usable shape, no spare
The current car combines the reshaped opening with a small change that surprises new owners. There is no spare tire. Mazda's 2025 spec deck lists only a tire puncture repair kit, standard on every trim.
The RF follows the same logic as the NC hardtop. Mazda's 2019 press kit says its roof panels stow without intruding on cargo space. That matches the small volume gap between the soft top and the Miata RF.
Case study: an ND owner plans a long drive and assumes a spare sits under the floor. It does not. A repair kit is not a wheel. Read what your kit covers in the owner's manual before you leave.
Weighing practicality across generations before you buy?
Read our used Miata buying guideWhat Fits in a Miata Trunk?
Bags in inches, verdicts from published tests
Length and height beat volume
Each bar is the longest side of the bag. The label tells you what happened when it met a Miata trunk.
Carry-onStopped by height, so the second one rides on top.Checked bagA 26-inch bag barely fit. A larger one did not.Golf bagToo long to lie flat, too shallow a trunk to angle it.
Hatched: size range for that bag type.Tests: Autoblog on an RF, SlashGear on golf bags
Numbers and layouts only go so far. What you really want to know is whether your stuff fits. Here are the items that come up most, measured against published tests.
Carry-ons and checked bags
Autoblog loaded an RF with real luggage and measured every bag. According to Autoblog (Mazda MX-5 Miata RF Luggage Test, 2020), a 26-by-16-by-11-inch checked bag barely fit. A slightly larger bag did not fit at all. Two carry-ons of about 24-by-15-by-10 inches fit only when stacked. Height was the limit.
Those figures give you a usable rule. One mid-size checked bag is the ceiling. Two carry-ons are possible, but only one on top of the other.
Golf bags
Golf clubs raise their own problem. According to SlashGear (Can You Fit Golf Clubs In A Mazda MX-5 Miata?), stand bags run 34 to 38 inches. Cart and tour bags run 38 to 42 inches. A golf bag generally cannot lie flat in the trunk. The trunk is too short for it, and not deep enough to angle it diagonally.
Profile type: the weekend golfer buys a Miata picturing top-down drives to the course. The plan works only with a different carry solution. Settle that question before you sign, not after.
A quick fit guide
- Fits well: two soft weekend bags in an ND, per Mazda's own design goal
- Fits with stacking: two carry-on roller bags
- Fits barely: one 26-inch checked bag
- Does not fit flat: a full-size golf bag
Everyday errands
Road trips get the attention, but daily errands matter too. A Hooniverse writer tried a 2018 Miata as a school-run car and listed what went in.
Depending on the day, the trunk took a lacrosse bag with a kid-size stick. A trumpet case or a kids' guitar case also fit. Backpacks and a work bag fit too. The writer also noted that the small opening limits what goes in.
That matches the pattern seen everywhere else. Long, soft or narrow items work. Anything wide and rigid struggles at the opening.
Test with your own bags
The best tool costs nothing. Bring the bags you actually travel with to the test drive. Load them yourself, then close the lid.
If you shop online, use a tape measure instead. Measure the height of your bag first. In Autoblog's test, height was the dimension that stopped the second carry-on from sitting flat.
How to Pack a Miata Trunk for a Road Trip
Loading order, seen from above
Soft and deep first, rigid and close last
- 1
Go soft. Duffels and packing cubes, never hard shells.
- 2
Biggest bag deep, pushed toward the seats.
- 3
Corners and gaps take shoes and soft items.
- 4
Small rigid items last, close to the opening.
- 5
Close gently, reopen, adjust whatever resists.
Two travelersOne soft bag each. Clothes rolled, shoes in thin pouches.
CockpitKeep it empty. Loose items slide under pedals and rattle.
Owners who travel far in these cars share a mindset more than a trick. Keith Tanner, posting on the Grassroots Motorsports forum in 2018, summed it up. He treats "the trunk like a piece of luggage" instead of fitting luggage into it.
That shift changes everything. You stop thinking in suitcases. You start thinking in soft volumes that fill a shape.
The packing order that works
- Choose soft duffels or packing cubes, never hard shells.
- Put the largest soft bag in first, pushed deep toward the seats.
- Fill the corners and any gaps around a hump in the floor with soft items.
- Load small rigid items last, close to the opening.
- Close the lid gently, then reopen and adjust anything that resists.
Packing for two
Two people means two sets of everything. The trick is to give each person one soft bag and nothing else in the trunk.
Roll clothes rather than fold them. Rolled clothes compress into the gaps a folded stack leaves behind. Put shoes in their own thin pouches, so they can fill the corners without soiling the rest.
Keep toiletries flat and small. A tall wash bag is exactly the kind of rigid item that fights the opening. Two slim pouches pack far better than one tall case.
Finally, decide in advance what stays home. In a Miata, the trip starts when you pack less.
Common mistake: hard-shell luggage
Classic scenario: a couple packs two matching hard-shell carry-ons for a week away. At home, they look compact. At the car, they can only stack, like the carry-ons in Autoblog's test.
Swap one shell for a duffel and the picture changes. A duffel flattens and bends around the other case. That flexibility is what leaves gaps for shoes and a jacket.
Keep the cockpit clear
Tanner also advises keeping everything out of the cockpit. He says it makes the trip feel like a day out rather than a packed car.
There is a practical side too. Loose items in a small cabin slide under pedals and rattle behind the seats. If something must ride inside, secure it.
When the Trunk Is Not Enough: Racks, Deck Bags and Behind-the-Seat Storage
Beyond the trunk
Three layers, one roadster
Owners stretch a small car into a touring car by stacking storage zones, each with its own job.
TrunkHeavy and bulky items, clothes in soft bags.
Always the first layer you fill.
On the lidA strapped deck bag, or a rack carrying a dry bag.
Straps avoid drilling. A rack needs a waterproof bag against rain and spray.
Behind the seatsA narrow bag on tonneau D-rings or soft-top boot studs.
Light items only. It can double as a windblocker.
Load light and soft items up top. Heavy gear stays in the trunk.
Sometimes the trunk simply runs out. A week-long trip for two, camping gear or a track day kit will push past it. Owners have long worked around it without changing cars.
Trunk-lid bags
The simplest option sits on top of the trunk lid. Miata.net documents the Atlantic Design Cargo Bag, sold for NA and 1999 Miatas. It is a soft bag of about 36 x 15 x 5 inches. It rests on a foam sheet and attaches with eight straps that hook under the lid.
A bag like this suits clothing and light items. It frees the trunk itself for heavier or bulkier gear.
Trunk racks and dry bags
A trunk rack is the other common answer. In the same Grassroots Motorsports thread, one member describes a trunk rack with a canoe-style dry bag. That setup ended range and weather worries on the member's four- and five-day trips.
The dry bag is the key detail. A rack exposes your luggage to rain and road spray. A waterproof bag solves that in one move.
Rack or no rack
Some racks mean drilling the trunk lid. Miata.net reviewers point out that a strapped-on bag avoids both the cost of a rack and those holes.
So the choice comes down to how often you tour. For one long trip a year, a strapped bag is the lighter commitment. For regular touring, a rack with a dry bag is more flexible.
Either way, load light and soft items up top. The trunk stays the place for anything heavy.
The space behind the seats
The thread mentions two more ideas. One member uses a long, narrow bag secured with D-rings to the tonneau cover. Another snaps a bag onto the soft-top boot studs, where it also works as a windblocker.
Profile type: a couple plans a long summer tour in an NB. The trunk takes the clothes. A rack carries a dry bag with camping gear. The cabin stays empty. That three-layer setup combines every idea in this section.
Your Most Common Questions About Miata Trunk Space
What sits on the ND trunk lid?
Check this before you buy a rack or a deck bag. Mazda's 2025 spec deck lists an aluminum trunk lid on every trim. It adds a lid-mounted shark-fin antenna on the Club and Grand Touring soft tops and on both RF trims. The base Sport soft top goes without it. Read the product's fit notes for your exact trunk lid. Our ND Miata buyer's guide covers the rest of the car.
Can a child booster seat fit in the trunk?
Sometimes, with luck. A Hooniverse writer used a 2018 Miata for school runs. The booster seats just made it through the small trunk opening. Once inside, there was still room for a school backpack. The opening was the hard part, not the volume. Test the exact seat you own before relying on the car. Booster designs vary in width and height.
Do trunk-lid bags scratch the paint?
They can. Miata.net reviewers of trunk-lid luggage say the included pad protects the finish if both are clean. Grit trapped underneath is what scratches. One owner recommends a coat of wax first. Another found the supplied foam too thin and glued on thicker foam. Expect one more trade-off: a trunk-lid bag blocks much of the view through the interior mirror.
Where does a golf bag go if not the trunk?
SlashGear suggests the obvious answer: the passenger seat, if nobody is sitting there. That makes golf a solo outing in a Miata. If you play with a partner, you need another plan. Decide which matters more before buying, because golf clubs and a passenger rarely travel together in this car.
Is a Miata trunk practical for groceries?
For a small run, yes. For a big one, it gets awkward. Autoblog noted that the trunk forces you to stack grocery bags. That is bad news for fragile items like eggs, bread and bananas. A collapsible crate helps keep stacked bags upright. Delicate items can ride in the passenger footwell when you shop alone.
Pack for the Miata You Own
The takeaway
Shape over
cubic feet.
Five rules that turn a small trunk into a long weekend for two.
1
Know your generationA tire and a battery in the NA, a flat floor in the NB, no spare in the ND.
Trust shapeCheck opening, floor and depth before any figure.
Travel softDuffels bend. Hard shells only stack.
Add a layerDeck bag or rack when the trip outgrows the trunk.
Keep the cabin clearThe drive stays the point of the trip.
Last verified October 2026
The Miata trunk will never be big. It was never meant to be. What it rewards is planning, and the right luggage.
Know your generation's quirks. Trust shape over cubic feet. Travel with soft bags. Add a rack or a deck bag when the trip demands it. Do that, and a long weekend for two becomes easy.
None of this asks you to give up much. Pack well, and a bigger trunk matters less than you think. The car stays light, the cabin stays clear, and the drive stays the point of the trip.
The best ideas often come from other owners. Club drives and tours are a good place to see how they pack.
Want to see how other owners pack for a long drive?
Find a Miata club near youSources
- Mazda North American Operations, MX-5 Soft Top and RF spec deck
- Mazda North American Operations, MX-5 press kit and trunk redesign
- Mazda North American Operations, MX-5 release on the retractable hardtop
- Kelley Blue Book, NA Miata specifications
- Kelley Blue Book, NB Miata specifications
- Kelley Blue Book, NC Miata specifications
- Autoblog, Miata RF luggage test
- SlashGear, golf clubs in a Miata
- The Autopian, NA and NB trunk layouts
- Grassroots Motorsports forum, Miata road trip storage
- Miata.net, trunk-lid luggage reviews
- Hooniverse, Miata as a family car
Alan Chevereau, founder of MX5Global and independent SEO consultant. He owns a Mazda MX-5 Miata. MX5Global, launched on November 17, 2025, is an independent site dedicated to the Miata. Every guide is built from verified sources, manufacturer data and published owner reports.
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