Car dealerships, ADA compliance, and the obsession with 100% Google Lighthouse scores
Car dealerships didn’t start caring about ADA website compliance because of accessibility. They started caring because Lighthouse turned it into a number.
Car dealerships, ADA compliance, and the obsession with 100% Google Lighthouse scores
Car dealerships didn’t start caring about ADA website compliance because of accessibility. They started caring because Lighthouse turned it into a number.
By 2024, most dealership marketing vendors were bragging about performance scores. By 2025, accessibility scores joined the pitch decks. A green “100” became proof that a site was “safe.”
It wasn’t.
Dealership websites kept getting sued anyway. In some cases, the sites scoring 100 on Lighthouse were worse for real screen reader users than older sites that scored lower.
This article breaks down why car dealerships became prime ADA website targets, how Lighthouse fits into that story, where a perfect score helps, where it misleads, and why plaintiffs and courts don’t care about your audit badge.
No abstractions. Just how it actually works on dealer sites.
Why car dealerships attract ADA website lawsuits
Dealership websites sit at an awkward intersection of complexity and neglect.
They’re not simple brochure sites. They’re not full e-commerce platforms either. They rely on third-party inventory feeds, finance calculators, trade-in tools, chat widgets, maps, video players, and lead forms layered on top of each other.
Most of those tools are not built by the dealer. The dealer still owns the site.
That’s the legal hook.
Under Title III of the Americans with Disabilities Act, car dealerships count as places of public accommodation. Courts have treated dealership websites as extensions of showroom access since at least the late 2010s.
By 2025, plaintiff firms didn’t debate coverage. They skipped straight to testing.
Across dozens of demand letters and complaints reviewed in 2024 and 2025, the same dealership-specific issues kept appearing.
Inventory listings with image carousels that break keyboard navigation.
Finance forms where error messages aren’t announced to screen readers.
Chat widgets that trap focus.
Embedded videos with no captions or controls.
PDFs for buyer guides and warranty disclosures that aren’t readable by assistive technology.
These aren’t edge cases. They come from vendor integrations that dealers rarely touch after launch.
Why dealerships started chasing 100% Lighthouse scores
Google’s Google Lighthouse made accessibility visible to non-technical people.
One click. One score. Four categories. Green, yellow, red.
For dealership owners used to measuring success in leads and impressions, Lighthouse felt familiar. It looked like accountability.
Marketing agencies leaned into that. A 100/100 accessibility score became a sales hook, especially after ADA lawsuits started hitting the auto industry harder.
By mid-2025, it wasn’t unusual to hear a dealer say, “We score 100 on Lighthouse, so we’re compliant.”
They weren’t lying. They were misunderstanding the tool.
What Lighthouse actually measures for accessibility
Lighthouse runs a set of automated checks derived loosely from Web Content Accessibility Guidelines success criteria.
It checks things like:
- Missing alt attributes
- Low contrast text
- Missing form labels
- Improper ARIA roles
If it doesn’t detect those failures, it gives a high score. Sometimes a perfect one.
What it does not do is simulate real user interaction.
It doesn’t attempt to buy a car. It doesn’t apply for financing. It doesn’t navigate inventory filters with a keyboard for ten minutes straight.
Automated tools never have.
How a dealership can score 100 and still be inaccessible
This is where the disconnect shows up.
A dealership site can:
- Pass every automated rule
- Use valid ARIA attributes
- Include alt text everywhere
and still be unusable to a screen reader user trying to schedule a test drive.
One common example from 2025 audits involved inventory filters. The markup was technically valid. Lighthouse passed it. Keyboard focus technically moved.
In practice, focus jumped unpredictably. Screen reader announcements lagged. Users got lost.
Lighthouse didn’t see that. Plaintiffs did.
A real dealership lawsuit example
In June 2025, a multi-location dealership group in California was sued under the ADA. Their site scored 98–100 on Lighthouse across core pages.
The complaint focused on the trade-in valuation tool. The tool was provided by a national vendor. It used dynamic content updates without proper announcements to assistive technology.
A screen reader user couldn’t complete the form.
The dealership settled for $12,000 plus remediation. The Lighthouse score didn’t change. The lawsuit still happened.
Why courts don’t care about Lighthouse scores
Courts don’t ask whether a site passed an audit. They ask whether a person with a disability could access the service.
ADA Title III claims don’t include a compliance certificate defense. There’s no safe harbor for using Google tools. There’s no credit for best effort.
Judges see Lighthouse reports occasionally, usually attached to defense filings. They rarely mention them in opinions. They focus on affidavits and user experience.
That’s been consistent across districts.
The DOJ’s position doesn’t help Lighthouse either
The U.S. Department of Justice has been clear in enforcement actions and consent decrees. Automated testing alone is not sufficient.
The DOJ repeatedly requires manual testing, user testing, and ongoing monitoring in settlement agreements involving websites.
Lighthouse is automated. That’s its strength and its limit.
Why dealerships rely on it anyway
Speed and cost.
A Lighthouse report is free. It takes minutes. It produces a clean number.
Manual accessibility audits for dealership sites in 2025 typically cost $3,000 to $8,000 depending on scope. Fixing issues across inventory feeds and vendor tools costs more.
Dealers already pay five figures a month for marketing. Accessibility feels like overhead until a lawsuit hits.
So Lighthouse becomes a proxy. Not a shield.
The vendor problem dealerships can’t contract away
Most ADA failures on dealership websites come from third-party systems:
- Inventory management systems
- Finance calculators
- Chat and scheduling tools
- Video hosting platforms
Vendors often claim their tools are accessible. Some are. Some aren’t. Some were until an update broke something.
Legally, that doesn’t matter.
The dealership is the public accommodation. The dealership gets sued.
Contracts rarely shift that risk effectively. Plaintiffs don’t name vendors. They name the dealer.
Why a perfect score can actually increase risk
This part surprises dealers.
A site that scores 100 on Lighthouse signals that basic automated issues have been addressed. That pushes plaintiff testers into deeper interaction.
Instead of stopping at missing alt text, they attempt full workflows.
That’s where dealership sites fail.
Finance flows. Appointment scheduling. Trade-in tools. Multi-step forms.
A high Lighthouse score doesn’t deter testing. It invites it.
How plaintiff firms test dealership sites now
By 2025, plaintiff firms had adapted to widespread automated compliance.
They still run scans. Then they do something simple.
They try to:
- Search inventory
- Filter results
- Open a vehicle detail page
- Schedule a test drive
If a screen reader or keyboard user can’t finish that path, standing is established.
Lighthouse never touches that path.
A criticism from inside the accessibility community
Accessibility professionals have been blunt about Lighthouse misuse.
Automated tools catch maybe 25–35 percent of WCAG failures. The rest require human judgment and interaction.
Dealerships that treat a 100 score as “done” often regress because they stop paying attention.
That criticism isn’t theoretical. It shows up in repeat lawsuits against the same brands under different URLs.
Where Lighthouse actually helps dealerships
This isn’t an argument against Lighthouse.
It does help.
It catches obvious issues early. It forces vendors to clean up markup. It raises baseline awareness.
Dealership sites that score 100 generally have fewer low-effort failures than sites scoring 60.
That reduces exposure at the margins.
It doesn’t eliminate it.
What auditors look for beyond Lighthouse on dealer sites
Manual audits in 2025 focused on dealership-specific workflows:
Inventory carousels with keyboard testing.
Finance forms with error handling reviewed using screen readers.
Modal dialogs tested for focus management.
PDF disclosures checked for tagging and reading order.
Video players tested for captions and controls.
None of that appears in a Lighthouse score.
The trade-off dealerships keep making
Dealership websites exist to convert leads. Accessibility fixes sometimes slow down flashy UI elements that marketing teams like.
Sliders get simplified. Animations get removed. Widgets get replaced.
That can affect conversion metrics.
Dealers weigh that against legal risk. Many choose the metric they can see daily. Lawsuits feel abstract until served.
A concrete example from a regional dealer group
In late 2024, a Midwest dealer group rebuilt its site with accessibility in mind. Lighthouse scores hit 100 across the board.
Manual testing found issues in the finance pre-approval tool. Fixing them required replacing the vendor.
The group delayed. In mid-2025, they received a demand letter citing that exact flow.
They fixed it then. The cost was higher. The timing was worse.
Why “100% accessible” is not a defensible claim
No website is permanently compliant.
Inventory changes daily. Vendors update code weekly. Content editors upload new media constantly.
Accessibility is a process, not a score. Courts implicitly recognize that by focusing on access at the time of use.
Lighthouse snapshots don’t capture that reality.
Where dealership ADA compliance actually stands
Car dealerships didn’t become ADA targets by accident. Their sites are complex, transactional, and vendor-heavy.
Lighthouse made accessibility visible. It did not make it solved.
A perfect score reduces one category of risk. It leaves others untouched.
Plaintiffs know that. Courts know that. Dealers are still learning it, lawsuit by lawsuit.
The number is easy. The access is harder.