Spark Automotive
Spark Automotive is a BigCommerce theme by Halothemes ($350). Tested on 2026-11-10 with Google Lighthouse via PageSpeed Insights on its own demo store, it scores 69 for mobile speed and 81 for desktop speed, 97/97 for SEO and 92/91 for accessibility (mobile/desktop, 0–100).
Mobile55

Desktop89

Scores
| Mobile | Desktop | |
|---|---|---|
| Speed | 69 | 81 |
| SEO | 97 | 97 |
| Accessibility | 92 | 91 |
| Best practices | 93 | 95 |
Single preset · measured 30 times since 2026-11-07 · Lighthouse via PageSpeed Insights · 0–100, 90+ is good.
Why not 100 — Spark-Automotive home page
Mobile
Speed 55 · 45 points to gain
- −25 Largest Contentful Paint medium effort
- −9.8 First Contentful Paint medium effort
- −6.3 Speed Index medium effort
- −4.2 Total Blocking Time medium effort
- 4.6 s Reduce unused JavaScript high effort
- 760 ms Reduce unused CSS high effort
Accessibility 93 · 7 points to gain
- −3 `[aria-hidden="true"]` elements contain focusable descendents medium effort
- −3 Touch targets do not have sufficient size or spacing. medium effort
- −1.3 Heading elements are not in a sequentially-descending order medium effort
Best practices 92 · 8 points to gain
- −3.8 Serves images with low resolution low effort
- −3.8 Browser errors were logged to the console medium effort
Desktop
Speed 89 · 11 points to gain
- −9.9 Total Blocking Time medium effort
- −0.5 Largest Contentful Paint medium effort
Accessibility 90 · 10 points to gain
- −2.8 `[aria-hidden="true"]` elements contain focusable descendents medium effort
- −2.8 ARIA input fields do not have accessible names medium effort
- −2.8 Touch targets do not have sufficient size or spacing. medium effort
- −1.2 Heading elements are not in a sequentially-descending order medium effort
Best practices 92 · 8 points to gain
- −3.8 Displays images with incorrect aspect ratio low effort
- −3.8 Browser errors were logged to the console medium effort
Presets and pages
| Preset / page | Speed | SEO | A11y | Speed | SEO | A11y | Tested |
|---|---|---|---|---|---|---|---|
| mobile | desktop | ||||||
| Spark-Automotive default demo ↗ | 69 | 97 | 92 | 81 | 97 | 91 | 2026-11-07 |
| category ↗ | 84 | 100 | 94 | 80 | 100 | 94 | 2026-11-10 |
| home ↗ | 55 | 100 | 93 | 89 | 100 | 90 | 2026-11-07 |
| product ↗ | 69 | 92 | 88 | 75 | 92 | 88 | 2026-11-10 |