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AUL Corp vs Diamond Warranty

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Pros
  • One of the widest plan selections of any dealership provider
  • No waiting period on most plans
  • Wear and tear coverage, included on select plans
  • Disappearing deductible feature on select plans
  • Financing available at point of sale through vehicle loan
  • Wrap coverage available for vehicles still under factory powertrain warranty
  • Comprehensive ancillary product suite available
  • Transferable to new owner on most plans
  • Coverage at any licensed repair facility in the US or Canada
Pros
  • 24/7 roadside assistance
  • Transferable coverage
Cons
  • Sold exclusively through dealerships
  • Dealer markup means no standardized or transparent consumer pricing
  • Prior authorization required before any repair begins; no paid costs reimbursed
  • Stringent cancellation requirements
  • Not available in New York
  • Maintenance record requirements strictly enforced
  • C+ BBB rating for Protective Asset Protection with active consumer alert
Cons
  • Limited nationwide accessibility
  • Limited information online
  • Limited coverage conditions
  • Limited to dealerships
Summary

Founded in 1990, AUL built their reputation as a dealership-based vehicle service contract provider before being acquired by Protective Life Insurance Company in 2022. Today, AUL-branded contracts are administered through Protective Asset Protection and remain available exclusively through franchised and independent dealerships. This means consumers cannot buy plans directly online, and pricing depends on the selling dealer, vehicle, coverage tier, deductible, and any dealership markup. AUL’s biggest strength is the breadth of their coverage lineup. Their catalog includes powertrain, stated-component, wrap, exclusionary, lifetime, hybrid, and EV, and technology-focused plans. Some products also offer Any Year Any Mileage eligibility, while most plans begin on the day of purchase with no standard waiting period. Benefits may include roadside assistance, rental reimbursement, trip interruption coverage, transferable contracts, online claims submission, and same-day claims payment on approved repairs. However, customer feedback is mixed, with concerns around claim denials, inspection delays, rental reimbursement limits, cancellation complexity, and pricing transparency. AUL may appeal to dealership buyers who want broad coverage options, but reviewing the contract carefully before signing is essential.

Summary

Diamond Warranty Corp is an extended auto warranty company that has been in business since 2006. It offers a variety of plans at competitive prices so that you can find the perfect coverage for your needs. Diamond Warranty Corp also has a convenient claims process that makes it easy to get your car repaired.

Quick Stats
  • BBB Rating : C+ (not accredited)
  • Maximum Mileage : 150,000 miles; ‘Any Year Any Mileage’ on select entry-level plans
  • Money-Back Guarantee : Undisclosed
  • Number of Plans Available : 10+ named products across new and pre-owned vehicle categories
  • Waiting Period : N/A
  • Operating Status : Active
  • Deductible Range : $0–$250
Quick Stats
  • BBB Rating : A+
  • Maximum Mileage : 125,000
  • Money-Back Guarantee : Unavailable
  • Number of Plans Available : 5
  • Waiting Period : 30 days
  • Operating Status : Active
Selling Points
  • "Any Year Any Mileage" eligibility on select plans
  • Absolute Lifetime Protection and unlimited time term options available
  • Coverage for hybrid drive battery, electric drive battery, and high-voltage battery
  • Advanced driver assistance systems and tech component coverage
  • Same-day claims payment on approved repairs (most within two hours)
  • eClaims portal allows repair shops to submit claims online 24/7
Selling Points
  • Flexible contract duration
Coverage & Plan Flexibility
  • High-mileage
  • Exclusionary
  • Powertrain
  • $0 deductible option
  • Commercial/rideshare
  • EV/hybrid components
  • No waiting period
  • Option with free maintenance benefits
  • Transferable
Coverage & Plan Flexibility
  • High-mileage
  • Exclusionary
  • Undisclosed
    Powertrain
  • Undisclosed
    $0 deductible option
  • Commercial/rideshare
  • EV/hybrid components
  • Undisclosed
    No waiting period
  • Undisclosed
    Option with free maintenance benefits
  • Undisclosed
    Transferable
Claims & Repair Experience
  • 24/7 roadside assistance
  • Any licensed repair shop
  • Direct shop payment
  • In-network repair network
  • Mobile app for claims
  • Online claims portal
  • Trip interruption coverage
Claims & Repair Experience
  • Undisclosed
    24/7 roadside assistance
  • Undisclosed
    Any licensed repair shop
  • Direct shop payment
  • In-network repair network
  • Undisclosed
    Mobile app for claims
  • Undisclosed
    Online claims portal
  • Trip interruption coverage
Customer Support & Transparency
  • Phone
  • 24/7 customer support
  • Email
  • FAQs / Educational resources
  • Live Chat
  • Mobile Application
  • Online quote without phone
  • Sample contracts online
Customer Support & Transparency
  • Phone
  • 24/7 customer support
  • Email
  • FAQs / Educational resources
  • Live Chat
  • Mobile Application
  • Undisclosed
    Online quote without phone
  • Undisclosed
    Sample contracts online
Contract & Payment Terms
  • Contract (lump-sum) payments
  • Pay-in-full discount
  • Month-to-month payments
  • Cancellation fee
  • Multi-vehicle discount
  • Price lock guarantee
  • *Not all payment methods are available in all states
  • *Some payment methods may incur additional fees
Contract & Payment Terms
  • Contract (lump-sum) payments
  • Undisclosed
    Pay-in-full discount
  • Month-to-month payments
  • Undisclosed
    Cancellation fee
  • Undisclosed
    Multi-vehicle discount
  • Price lock guarantee
  • *Not all payment methods are available in all states
  • *Some payment methods may incur additional fees
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