Fontana, California · 8 years in business
A mobile car wash and detailing crew serving Fontana and the surrounding area.
Everything below this line — the compliance file, operational scorecard, proof-of-work records, dispute protocol, and credentialed reviews — is generated sample content that illustrates the WashAttest record format. It is not real data about Onyx Detail Co.. This business is not yet in our directory, so no real data exists for it on this page.
Sample record snapshot
Verified Oct 4, 2026
Trailing 12 months
Attached to this listing
All resolved
Each document is checked against the issuing source and re-verified at renewal. An expired or missing item stays visible on the record.
General liability insurance
Erie Insurance — $1M / $1M aggregate
verified
Expires Jan 17, 2027
Workers' compensation
Erie Insurance — statutory limits, 6 employees covered
verified
Expires Mar 8, 2027
Business license
State contractor registration No. 654939
verified
Expires Aug 25, 2027
Stormwater / NPDES permit
State general permit for power washing discharge
verified
Expires Jan 5, 2027
OSHA safety program
Documented training program, 2 recordable incidents in 12 months
verified
No expiry on file
Water reclamation and discharge
Trailing 12 months, drawn from 104 documented visits. These are the numbers a star rating hides.
Arrived within the agreed service window
Visits requiring a return trip
Median time to first reply
Documented nightly capacity
Contracts renewed at term
Recordable incidents per 1,000 visits
Documentation attached to this listing and reconciled against billing, so a claim about work performed can be checked rather than taken on faith.
Timestamped photo pairs captured at the start and end of each scheduled visit, retained for 24 months.
Per-visit log recording date, unit identifiers, services performed, and the crew on site.
Current certificate naming the required additional insured, re-verified at each renewal.
Unit-level report reconciling units serviced against units billed for the billing period.
A business can answer a review with evidence. The record shows the claim, the response, the evidence, and the outcome — including when the review was upheld.
No disputes have been filed against this listing.
35 of 38 reviews come from a verified operator role. Roles on this listing: Dealership manager, Realtor, Vehicle owner, Collector, Fleet manager, Rideshare driver, Small business owner.
Simon V.
Dealership manager
Oct 11, 2026
Mixed experience with my Volkswagen Tiguan in Fontana. The price went up from the quote without explanation.
Mobile Detailing · Fontana, California · via Yelp
Camille S.
Realtor
Oct 9, 2026
The convenience of a mobile detail in Fontana is worth every penny. Would book again. Rescheduling once was a minor hassle.
Mobile Detailing · Fontana, California · via Google
Jasmine A.
Dealership manager
Oct 6, 2026
I have been using them monthly in Fontana for over a year now. Happy with the detail. It took longer than quoted but the result was worth it.
Mobile Detailing · Fontana, California · via Facebook
Diane E.
Vehicle owner
Sep 14, 2026
Booked a mobile detail in Fontana and the van pulled up right on time. Happy with the detail. It took longer than quoted but the result was worth it.
Mobile Detailing · Fontana, California · via Facebook
Jared M.
Collector
Sep 3, 2026
The detail itself was fine, but getting it booked was frustrating. There were still water spots on the glass.
Mobile Detailing · Fontana, California · via Facebook
Simon B.
Collector
Aug 22, 2026
I manage several vehicles and use them for all of them in Fontana. Zero swirl marks after the polish.
Mobile Detailing · Fontana, California · via Google
Diego M.
Realtor
Aug 19, 2026
The convenience of a mobile detail in Fontana is worth every penny. No water spots, no streaks, no shortcuts.
Mobile Detailing · Fontana, California · via Facebook
Clay K.
Collector
Aug 13, 2026
Booked a mobile detail in Fontana and the van pulled up right on time. Tires and trim were dressed perfectly — not greasy at all.
Mobile Detailing · Fontana, California · via Google
Grace D.
Realtor
Aug 13, 2026
Booked online, confirmed in minutes, detailed the next morning in Fontana. The headlights look brand new after they polished them.
Mobile Detailing · Fontana, California · via Google
Hugo Q.
Collector
Jul 6, 2026
My Ram 1500 had pet hair everywhere. You would never know now. No water spots, no streaks, no shortcuts.
Mobile Detailing · Fontana, California · via Yelp
Nina J.
Fleet manager
Jun 27, 2026
I manage several vehicles and use them for all of them in Fontana. Very good work. They missed a spot on the rear bumper but fixed it when I pointed it out.
Mobile Detailing · Fontana, California · via Yelp
Frank L.
Dealership manager
Jun 21, 2026
They detailed my Toyota Tacoma while I was at work in Fontana. Solid detail. The trunk area could have used one more pass.
Mobile Detailing · Fontana, California · via Yelp
Annette W.
Fleet manager
May 25, 2026
I would not book this again. There were still stains and crumbs in the back seat.
Mobile Detailing · Fontana, California · via Google
Megan I.
Rideshare driver
May 18, 2026
Same-day booking in Fontana and they still took their time. They pulled out stains I had written off years ago.
Mobile Detailing · Fontana, California · via Facebook
Ruth E.
Dealership manager
May 5, 2026
My Chevy Tahoe had pet hair everywhere. You would never know now. Solid detail. The trunk area could have used one more pass.
Mobile Detailing · Fontana, California · via Facebook
Amber R.
Rideshare driver
Apr 17, 2026
The detailer was professional, on time, and clearly cared about the result. The carpets came out two shades lighter.
Mobile Detailing · Fontana, California · via Facebook
Toni C.
Dealership manager
Apr 14, 2026
They detailed my Chevy Tahoe at my office parking lot in Fontana. They took before-and-after photos without me even asking.
Mobile Detailing · Fontana, California · via Google
Cody Z.
Small business owner
Apr 1, 2026
Had my Toyota Camry detailed in my own driveway in Fontana. Would book again. Rescheduling once was a minor hassle.
Mobile Detailing · Fontana, California · via Direct
Roberto Y.
Fleet manager
Mar 19, 2026
Two kids, a dog, and a Audi Q5 — they made it look new again. It rained the next day and the water beaded right off.
Mobile Detailing · Fontana, California · via Yelp
Sabrina E.
Rideshare driver
Mar 9, 2026
Booked the interior and exterior package for my Ford Explorer. The carpets came out two shades lighter.
Mobile Detailing · Fontana, California · via Google
Kendall Q.
Realtor
Feb 16, 2026
Booked a gift detail for my dad and his Ford Explorer in Fontana — he was thrilled. They cleaned areas I did not even know were dirty.
Mobile Detailing · Fontana, California · via Yelp
Devin Q.
Dealership manager
Feb 14, 2026
My Tesla Model Y is my daily driver and it shows — not anymore. They took before-and-after photos without me even asking.
Mobile Detailing · Fontana, California · via Direct
Jill N.
Small business owner
Jan 16, 2026
Scheduled a full detail for my BMW X5 and it came out flawless. The interior smelled brand new when they finished.
Mobile Detailing · Fontana, California · via Google
Antonio Z.
Realtor
Jan 14, 2026
The detailer was friendly but the finish was inconsistent. The price went up from the quote without explanation.
Mobile Detailing · Fontana, California · via Direct
Margot Q.
Dealership manager
Jan 11, 2026
Had my Honda Civic detailed in my own driveway in Fontana. The leather was conditioned and looks and feels great.
Mobile Detailing · Fontana, California · via Yelp
Miguel Y.
Dealership manager
Dec 30, 2025
I use them for every vehicle in the family here in Fontana. They even cleaned the door jambs and the trunk seal.
Mobile Detailing · Fontana, California · via Direct
Preston C.
Dealership manager
Dec 3, 2025
They detailed my Honda Civic while I was at work in Fontana. It rained the next day and the water beaded right off.
Mobile Detailing · Fontana, California · via Direct
Jill J.
Realtor
Nov 17, 2025
Mobile detailing that comes to you in Fontana — exactly what I needed. Every crevice was spotless, including the vents and cup holders.
Mobile Detailing · Fontana, California · via Google
Estelle Y.
Collector
Nov 14, 2025
Best mobile car wash I have found in Fontana. The leather was conditioned and looks and feels great.
Mobile Detailing · Fontana, California · via Yelp
Lena O.
Fleet manager
Nov 11, 2025
Full interior shampoo on my Toyota 4Runner and the seats look brand new. The interior smelled brand new when they finished.
Mobile Detailing · Fontana, California · via Facebook
Odette I.
Dealership manager
Nov 2, 2025
Paint correction on my Chevy Tahoe removed swirls I thought were permanent. The interior smelled brand new when they finished.
Mobile Detailing · Fontana, California · via Facebook
Miles F.
Small business owner
Oct 21, 2025
Scheduled a full detail for my Audi Q5 and it came out flawless. Only reason it is not five stars is the appointment ran about 30 minutes late.
Mobile Detailing · Fontana, California · via Direct
Wesley O.
Small business owner
Oct 15, 2025
They came to my apartment complex in Fontana with their own water and power. The glass was crystal clear inside and out.
Mobile Detailing · Fontana, California · via Yelp
Luis L.
Collector
Oct 10, 2025
Fine work, but I expected more for what I paid. The appointment was rescheduled twice.
Mobile Detailing · Fontana, California · via Yelp
Troy X.
Collector
Sep 16, 2025
The detailer was professional, on time, and clearly cared about the result. Great work overall — I just wish the booking window was tighter.
Mobile Detailing · Fontana, California · via Google
Arturo E.
Rideshare driver
Sep 7, 2025
I use them for every vehicle in the family here in Fontana. Solid detail. The trunk area could have used one more pass.
Mobile Detailing · Fontana, California · via Google
Julian R.
Realtor
Jul 31, 2025
I have tried every car wash in Fontana and this is the one I keep coming back to. They pulled out stains I had written off years ago.
Mobile Detailing · Fontana, California · via Yelp
Elijah B.
Collector
May 17, 2025
They treated my Lexus RX like it was their own car. They took before-and-after photos without me even asking.
Mobile Detailing · Fontana, California · via Google
No signed-in customer has reviewed this listing yet.
No account-backed reviews yet. Be the first to write one.
This listing is not claimed yet, so it cannot collect account-backed reviews. Add it from your account to open it up for reviews.
Fontana, California
Mobile detailing that comes to your driveway or office lot, with interior and exterior packages.
Fontana, California
A mobile car wash and detailing crew serving Fontana and the surrounding area.
Fontana, California
Mobile detailing that comes to your driveway or office lot, with interior and exterior packages.