Spark Automotive
Spark Automotive is a BigCommerce theme by Halothemes ($350). Tested on 2026-09-12 with Google Lighthouse via PageSpeed Insights on its own demo store, it scores 56 for mobile speed and 87 for desktop speed, 100/100 for SEO and 93/93 for accessibility (mobile/desktop, 0–100).
Mobile56

Desktop87

Scores
| Mobile | Desktop | |
|---|---|---|
| Speed | 56 | 87 |
| SEO | 100 | 100 |
| Accessibility | 93 | 93 |
| Best practices | 92 | 92 |
Single preset · measured 2 times since 2026-09-12 · Lighthouse via PageSpeed Insights · 0–100, 90+ is good.
Why not 100 — Spark-Automotive home page
Mobile
Speed 56 · 44 points to gain
- −25 Largest Contentful Paint medium effort
- −10 First Contentful Paint medium effort
- −9 Speed Index medium effort
- 5.5 s Reduce unused JavaScript high effort
- 600 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 87 · 13 points to gain
- −10.2 Total Blocking Time medium effort
- −1.7 Largest Contentful Paint medium effort
- −0.6 Speed Index medium effort
Accessibility 93 · 7 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
- −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 ↗ | 56 | 100 | 93 | 87 | 100 | 93 | 2026-09-12 |
| home ↗ | 56 | 100 | 93 | 87 | 100 | 93 | 2026-09-12 |