What we researched for this specific generation: where an enclosure actually fits, what the factory speakers are, how the factory audio is wired, and which real builds and commercial products exist for it. Confidence badges say how well each figure is sourced — this is research, not manufacturer spec.
Body styles covered: 4-Door SUV, 3-row
These are researched envelopes, not a guarantee. Measure your own vehicle — the numbers here tell you what to expect, not what you have.
| Location | cargo area behind 3rd row |
|---|---|
| Outer bounding box | 30.125"L x 15"H x 13.6875"W (dual-12" ported product footprint used as proxy) Mazda-published cargo room behind the 3rd row (2017-2019 and 2023 decks): length with the 3rd seats upright 21.5 in, width between the rear tire houses 40.2 in, width at floor 58.6 in, tailgate opening 43.2 in W x 29.6 in H, load threshold 31.7 in from the ground; length with the 3rd row folded 50.5 in, to the 1st row 84.9 in. The dual-12 proxy box above (30.125 in long, 13.7 in deep) fits within those. |
| Known obstructions | None specifically documented |
| Usable volume estimate | 3.5 ft³ |
Suggested configurations for this vehicle, not prescriptions. Run the numbers in the Box Builder before you buy anything.
| Subwoofers | 1x10" or 1x12" sealed |
|---|---|
| Box type | sealed |
| Location | cargo area behind 3rd row |
| Subwoofers | 2x12" ported, 3.50 ft3 (real example above) |
|---|---|
| Box type | ported |
| Location | cargo area behind 3rd row |
Sizes and depths below are what research turned up for this generation. Confirm against your own vehicle before cutting or ordering — trim levels vary.
| Factory speaker size | genuinely odd-sized ~8"/8.5" mid-bass, NOT the common 6x8" — owner measurement puts mounting holes at ~9" diagonally. Max mounting depth should stay under ~3.5"-4" to be safe. |
|---|---|
| Max mounting depth | 3.5 in |
| Known obstructions | Real non-standard factory size — don't assume a generic 6x8"/6.5" replacement will bolt in without checking |
| Adapter bracket needed | yes |
| Tweeter | n/a in the doors — confirmed pillar-mounted tweeter, ~35mm (~1.38"), Bose-equipped trims. Larger than the sister CX-5's own confirmed 25mm A-pillar tweeter despite the shared Bose branding — a real size difference between two Mazda SUVs. |
| Factory speaker size | 6.5" |
|---|---|
| Known obstructions | None specifically documented |
| Adapter bracket needed | unconfirmed |
| Tweeter | n/a — tweeter is pillar mounted, front only |
| Factory amp / premium audio | Base audio is a 6-speaker system. The Bose 12-speaker system (Centerpoint 2, AudioPilot 2, SurroundStage) "includes one subwoofer": a package option on Touring and standard on Grand Touring and Signature in 2017-2019 (Mazda spec decks); in 2022 it is the Touring Premium package. Mazda does not say where the subwoofer sits. |
|---|---|
| Adding subs without a head-unit swap | Confirmed straightforward — cargo-area builds don't touch the head unit |
| Head unit | No replacement needed |
Real cargo volume by row (1st/2nd/3rd row folded): 14.4/38.2/71.2 ft3 — genuinely large full capacity for the enthusiast tier. Commercial specs: dual 12" ported Stage Series, 1000W RMS/500W peak at 2-ohm, 30.125"L x 15"H x 13.6875"W; alternate dual 12" ported, 3.50 ft3 total, 3/4" MDF, CNC-cut.
Outside links. Some are commercial products, some are owner builds posted on forums — the label says which. We do not endorse any of them.
Each link opens the tool with this vehicle already selected.
Measure your own vehicle. Trim levels, factory subwoofer options, and mid-generation changes all move these numbers, and a box cut to a researched figure that does not match your truck is wasted wood. Where a badge reads Unconfirmed, treat the value as a starting point for your own measurement, not as an answer.