The short answer
Mercury Auto Transport has the stronger current audit profile
Mercury Auto Transport leads this comparison by 4 points in Verify Car Carrier’s current audit data. That is a meaningful evidence edge, not a guarantee of an individual shipment outcome—confirm the final quote, carrier assignment, pickup window, and cancellation terms before booking.
Start with the right kind of score
An audit score summarizes evidence. Customer ratings describe reviews. They use different scales and are not interchangeable.
Diesel Auto Express
Independent audit evidence
Audit score · out of 100
73 / 100
Good Option
Evidence dated April 6, 2026
View audit & evidence →Mercury Auto Transport
Independent audit evidence
Audit score · out of 100
77 / 100
Strong Recommended Option
Evidence dated April 6, 2026
Higher current audit scoreView audit & evidence →How to read this: audit scores use a 100-point scale, not a customer-star scale or a shipment guarantee. Public customer ratings below are out of 5; BBB ratings use the source’s own scale. “Not established” means the available record does not establish that fact. Read the methodology.
The facts, side by side
Compare the available evidence
Audit scores, public ratings and company records are different signals—not a single ranking. Missing data does not establish a finding. Confirm current authority and written terms before booking.
| Evidence signal | Diesel Auto Express Diesel Auto Express LLC | Mercury Auto Transport Mercury Auto Transport LLC |
|---|---|---|
| Independent audit score · /100 | 73 / 100 | 77 / 100 |
| Audit classification | Good Option | Strong Recommended Option |
| FMCSA authority | Active authority | Active authority |
| Years in Business | 18 years recorded in the audit | 19 years recorded in the audit |
| Home State | WA | FL |
| Google customer rating · /5 | 4.7 / 5 · 3,645 reviewsView Google source ↗ | 4.7 / 5 · 9,221 reviewsView Google source ↗ |
| BBB Rating | Rating not establishedView BBB source ↗ | Rating not establishedView BBB source ↗ |
| Transport Reviews customer rating · /5 | 2 / 5 · 4 reviewsView Transport Reviews source ↗ | 5 / 5 · 736 reviewsView Transport Reviews source ↗ |
| Yelp · /5 or platform status | Rating not establishedView Yelp source ↗ | Rating not establishedView Yelp source ↗ |
| Trustpilot · /5 or platform status | Rating not establishedView Trustpilot source ↗ | Rating not establishedView Trustpilot source ↗ |
| ConsumerAffairs · /5 or platform status | Rating not establishedView ConsumerAffairs source ↗ | Rating not establishedView ConsumerAffairs source ↗ |
| BBB customer reviews · /5 or platform status | Not established | Not established |
| BBB accreditation | Not established | Not established |
| BBB complaints · last 12 months | Not established | Not established |
| BBB complaints · last 3 years | Not established | Not established |
| Evidence snapshot date | April 6, 2026 — recorded evidence, not a live check | April 6, 2026 — recorded evidence, not a live check |
| Pricing Style | Mid-range | Mid-range |
| Price-change Risk | Low | Medium |
| Best Fit | balanced | balanced |
| Service Fit | balanced is its stated overall fit; strong audited fits: open transport | balanced is its stated overall fit; strong audited fits: open transport, enclosed transport, and inoperable vehicles |
| MC Number | MC-679452 | MC-647319 |
| USDOT Number | 1885300 | 2242305 |
| Profile links | Request a quote fromDiesel Auto Express →Read full audit → | Request a quote fromMercury Auto Transport →Read full audit → |
Your shipment. Your choice of company.
Request a quote from the company you choose. Company contact and a shipment-specific quote come next—not an instant price.
How to use this comparison
Choose based on your shipment—not a headline score alone
The score is a useful starting point, but price certainty, vehicle type, pickup urgency, and the quality of the assigned carrier matter too. We compare audited signals instead of selling rank positions, then link to the underlying broker reports so you can verify the evidence before you request quotes.
Best fit by situation
When each broker may make more sense
Diesel Auto Express
Audit score: 73/100 · Good Option
- •balanced shipping is a stated overall fit
- •strong audited fits: open transport
- •the audit records a low price-change risk signal
Mercury Auto Transport
Audit score: 77/100 · Strong Recommended Option
- •balanced shipping is a stated overall fit
- •strong audited fits: open transport, enclosed transport, and inoperable vehicles
- •19 years in business adds operating history
Broker-by-broker analysis
What the audited evidence says
Diesel Auto Express
Audit score: 73/100 · Good Option · Audited April 6, 2026
This audit gives Diesel Auto Express a score of 73/100 — Good Option. We recommend this broker based on the reviewed authority, identity, reputation, customer-experience, pricing, route, and brand evidence. The total combines 19/20 legitimacy, 15/25 reputation, 10/20 customer experience, 13/15 pricing, 9/10 route and service, and 7/10 brand evidence. All links + FMCSA active clean
Read detailed findings · Authority, reviews, pricing & service
Authority and company record
Diesel Auto Express LLC holds active FMCSA operating authority under MC-679452 / USDOT 1885300. Its legal name, authority record, and public-facing identity matches the public-facing identity reviewed; website, phone, and email all tested as working. The audit lists 18 years in business and marks the public profile as yes.
Reviews and customer experience
The audit records 4.7/5 on Google from 3,645 reviews, 2/5 on TransportReviews from 4 reviews, 2.8/5 on Trustpilot. Review activity is Okay and cross-platform alignment is Mixed. The BBB entry is not rated, with a low complaint signal. Customer feedback in this audit is rated Mixed for communication, Strong for price honesty, Mixed for pickup, Mixed for delivery, and Mixed for problem handling. Likelihood of using Diesel Auto Express again is rated Mixed.
Pricing and service fit
The audit classifies Diesel Auto Express as a mid-range option with low price-change risk. Its pricing assessment is 13/15, including 4/5 for price consistency and 4/5 for bait-and-switch risk. Urgent pickup The audit identifies balanced as the primary fit for Diesel Auto Express. Route and service evidence totals 9/10 (3/4 lane strength, 0/3 service fit, and 3/3 route relevance). Individual transport-type assessments are Open Transport: Strong, Enclosed: Mixed, Urgent Pickup: Mixed, Luxury / Classic: Mixed, Inoperable Cars: Mixed.
Transparency and brand signals
Brand-transparency evidence totals 7/10, based on website quality (2/3), review responses (1/2), service transparency (1/2), reputation-management maturity (1/1), and overall trust feel (2/2).
Positive signals
- Specific routes
- Urgent pickup
What to verify
- Delivery delays
- Pickup delays
Source checks
Mercury Auto Transport
Audit score: 77/100 · Strong Recommended Option · Audited April 6, 2026
This audit gives Mercury Auto Transport a score of 77/100 — Strong Recommended Option. We recommend this broker based on the reviewed authority, identity, reputation, customer-experience, pricing, route, and brand evidence. The total combines 20/20 legitimacy, 20/25 reputation, 12/20 customer experience, 9/15 pricing, 8/10 route and service, and 8/10 brand evidence. All links + FMCSA active clean; high review volume but mixed CX
Read detailed findings · Authority, reviews, pricing & service
Authority and company record
Mercury Auto Transport LLC holds active FMCSA operating authority under MC-647319 / USDOT 2242305. Its legal name, authority record, and public-facing identity matches the public-facing identity reviewed; website, phone, and email all tested as working. The audit lists 19 years in business and marks the public profile as yes.
Reviews and customer experience
The audit records 4.7/5 on Google from 9,221 reviews, 5/5 on TransportReviews from 736 reviews, 4.6/5 on Trustpilot. Review activity is Fresh and cross-platform alignment is Strong. The BBB entry is not rated, with a high complaint signal. Customer feedback in this audit is rated Mixed for communication, Mixed for price honesty, Mixed for pickup, Mixed for delivery, and Mixed for problem handling. Likelihood of using Mercury Auto Transport again is rated Mixed.
Pricing and service fit
The audit classifies Mercury Auto Transport as a mid-range option with medium price-change risk. Its pricing assessment is 9/15, including 3/5 for price consistency and 3/5 for bait-and-switch risk. Communication The audit identifies balanced as the primary fit for Mercury Auto Transport. Route and service evidence totals 8/10 (3/4 lane strength, 0/3 service fit, and 2/3 route relevance). Individual transport-type assessments are Open Transport: Strong, Enclosed: Strong, Urgent Pickup: Mixed, Luxury / Classic: Mixed, Inoperable Cars: Strong.
Transparency and brand signals
Brand-transparency evidence totals 8/10, based on website quality (3/3), review responses (2/2), service transparency (1/2), reputation-management maturity (1/1), and overall trust feel (1/2).
Positive signals
- Flexibility
- Communication
What to verify
- Delays on pickup
- Delays on delivery
Before you book
Get the terms in writing
Ask each broker for the total price, deposit and cancellation terms, pickup window, carrier information when assigned, cargo coverage, and how price changes are handled. A strong audit profile does not replace reading the agreement for your specific shipment.
Frequently asked questions
How should I compare Diesel Auto Express and Mercury Auto Transport?
Start with the available audit evidence, then compare the written quote, carrier-assignment process, pickup window, cancellation terms, and service fit.
Which company has the higher current audit score?
Mercury Auto Transport currently has the highest score. The score summarizes available evidence, but it cannot guarantee a specific carrier, final price, or pickup outcome.
Which shipment needs separate Diesel Auto Express and Mercury Auto Transport?
The current audit rates these as strong service fits: Diesel Auto Express: open transport; Mercury Auto Transport: open transport, enclosed transport, and inoperable vehicles. Confirm the written quote and actual carrier availability for your specific vehicle and route.
Does the higher trust score guarantee a better shipment?
No. The score summarizes current audit evidence; it cannot guarantee a specific carrier, final price, pickup timing, or shipment outcome. Always confirm the written quote, carrier details, insurance, and cancellation terms before booking.