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 Sedan
These are researched envelopes, not a guarantee. Measure your own vehicle — the numbers here tell you what to expect, not what you have.
| Location | trunk, through existing opening (promoted from existing notes) |
|---|---|
| Outer bounding box | 40"W x 17"H x 31"/36"D |
| 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 | 1x8"-12" fiberglass, ~0.7 ft3 (compact option) |
|---|---|
| Box type | sealed |
| Location | trunk, flush false-floor style |
| Subwoofers | 2x10" or 2x12" sealed, 1.21 ft3/chamber |
|---|---|
| Box type | sealed |
| Location | trunk |
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 | 6.5" component-compatible |
|---|---|
| Known obstructions | None specifically documented |
| Adapter bracket needed | unconfirmed |
| Tweeter | Front pillar (A-pillar), mounted on the BACK of the pillar trim panel, which real sourcing confirms makes it 'pretty easy to get to.' Real, important integration caution: NO wiring harness AND no mounting bracket exist for this location — real, recommended approach is splice/solder or Posi-Products speaker connectors, plus a self-devised securing method, the same 'no adapter for the tweeter spot' pattern found repeatedly across other domestic brands. |
| Factory speaker size | 6.5" component-compatible (same as front) |
|---|---|
| Known obstructions | None specifically documented |
| Adapter bracket needed | unconfirmed |
| Tweeter | n/a — tweeter is front pillar only |
| Factory amp / premium audio | Real, named system found (not Bose — this GM compact used a different brand from the larger GM trucks/SUVs). Optional Pioneer 9-speaker premium system over the 6-speaker base, adding a center-channel speaker, two rear-deck subwoofers, and a trunk-mounted amplifier — real architecture detail, not just a speaker-count bump. Exact trim/year gating within 2011-2016 not independently confirmed. |
|---|---|
| Adding subs without a head-unit swap | Confirmed straightforward — trunk-based builds don't touch the head unit |
| Head unit | No replacement needed |
Real measured trunk: 40"W x 17"H x 31"/36"D. Good budget-tier options found: standard MDF box (9" mounting depth, 2 chambers at 1.21 ft3/chamber, adjustable 10"/12" holes); a compact fiberglass option (~0.7 ft3, max 6.75" mounting depth, fits 8"-12"); a real DIY custom trunk build at 22"W x 17"D x 6.75"H. REAL BUDGET PRICING DATA — genuinely useful for a budget-conscious 'Civic guy' style buyer: local custom builds as low as $130 (0.75" birch, flush double baffle) up to $225-499+ for professionally finished enclosures.
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.