Carnation Auto Spa vs Trademark Car Wash
Data updated · September 26, 2026
both chains operate 23 locations; Trademark Car Wash is rated higher (4.74★ vs 4.56★); Trademark Car Wash has the lower reviewer-reported damage rate (0.47% vs 1.24%).
These chains operate at different scale tiers: Carnation Auto Spa is local-tier, Trademark Car Wash is regional-tier. Trademark Car Wash edges ahead on review-weighted rating (4.74★ vs 4.56★, a modest gap). On reviewer-reported damage, Trademark Car Wash runs lower at 0.47% vs 1.24% — a narrow operating-quality gap. The dataset-wide average across all car wash chains is roughly 1–3%.
| Metric | Carnation Auto Spa carnationautospa.com | Trademark Car Wash trademarkcarwash.com |
|---|---|---|
| Locations | 23 1 state | 23 8 states |
| Reviews | 24,259 11,167 LLM-scored | 52,272 22,179 LLM-scored |
| Avg rating | 4.56 | 4.74 |
| Damage rate (lower better) | 1.24% | 0.47% |
| Membership cancellation friction (of mem-discussing reviews) | 19.1% | 12.2% |
| Dominant format | Full Service | Express Tunnel |
Carnation Auto Spa's footprint covers 23 locations in 1 state (23.0 sites/state). Trademark Car Wash operates 23 locations across 8 states (2.9 per state). Carnation Auto Spa is single-state (Texas), so the comparison is most useful for customers and operators in that footprint. Total customer signal is 24,259 Google reviews for Carnation Auto Spa (11,167 LLM-scored) vs 52,272 for Trademark Car Wash (22,179 scored).
How do customers rate each chain on the 7 pillars?
Aspect scores aggregate WashIndex's LLM extractions across each chain's reviews. Each score is (positive − negative) / total mentions, ranging −1 to +1. Numbers above zero mean customers say more positive than negative things about the aspect; below zero means the reverse.
| Aspect | Carnation Auto Spa | Trademark Car Wash | Winner |
|---|---|---|---|
| Wash Quality | +0.62 | +0.80 | Trademark Car Wash |
| Staff & Customer Service | +0.84 | +0.94 | Trademark Car Wash |
| Wait Time | +0.27 | +0.77 | Trademark Car Wash |
| Per-Wash Price | -0.11 | +0.24 | Trademark Car Wash |
| Equipment Working | -0.48 | -0.45 | Trademark Car Wash |
| Facility Cleanliness | +0.83 | +0.76 | Carnation Auto Spa |
| Membership Value | -0.08 | +0.23 | Trademark Car Wash |
Carnation Auto Spa's strongest aspect in customer reviews is Staff & Customer Service (+0.84); the weakest is Equipment Working (-0.48). Trademark Car Wash's strongest is Staff & Customer Service (+0.94); the weakest is Equipment Working (-0.45). Trademark Car Wash comes out ahead on Wash Quality, Staff & Customer Service, Wait Time, Per-Wash Price, Membership Value; Carnation Auto Spa doesn't have a clear win on any of the 7 pillars.
Trademark Car Wash has the lower cancellation-friction rate (12.2% vs 19.1% of mem-discussing reviews) — a substantial gap. The dataset-wide rate is roughly 10–15%.
Do they operate the same format of car wash?
| Format | Carnation Auto Spa | Trademark Car Wash |
|---|---|---|
| Detail Shop | 4.8% | 1.4% |
| Full Service | 4.1% | 1.8% |
| Hand Wash | 1.1% | 2.6% |
| Express Tunnel | 1.8% | 1.4% |
Format share is computed across customer review mentions, not over locations. A chain with mostly express-tunnel sites but heavy detail-shop talk in reviews will show both at non-trivial rates.
These two operate different formats — Carnation Auto Spa runs Full Service, Trademark Car Wash runs Express Tunnel. That means they're serving different customer occasions (throughput vs. wash quality vs. price) rather than competing head-on.
Where do Carnation Auto Spa and Trademark Car Wash compete?
Carnation Auto Spa and Trademark Car Wash compete head-to-head in 1 metropolitan statistical area. In short: If customer-rating consistency is the deciding factor, Trademark Car Wash is the safer pick; if avoiding vehicle damage is the priority, Trademark Car Wash runs the lower reviewer-reported damage rate.
About Carnation Auto Spa vs Trademark Car Wash
Carnation Auto Spa vs Trademark Car Wash: which is bigger?
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Which has the higher customer rating, Carnation Auto Spa or Trademark Car Wash?
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Which has the lower damage rate, Carnation Auto Spa or Trademark Car Wash?
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Where do Carnation Auto Spa and Trademark Car Wash compete head-to-head?
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About this comparison
Both chains' numbers are pulled from the same WashIndex per-location dataset — Google reviews processed through LLM extraction across 55 dimensions, format classification from each operator's website, and competitive-density analysis. See each chain's full profile — Carnation Auto Spa / Trademark Car Wash — for monthly trends, per-location drill-down, executive summary, and anomaly detection.
See our full methodology for the extraction pipeline, validation samples, and aggregation logic.