Auto Warranty
Top Companies in 2026
Diamond Warranty vs MaxCare
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- Contracts backed by AmTrust Financial Services
- Available through a nationwide network of dealerships
- Multiple coverage levels ranging from powertrain to exclusionary protection
- Additional benefits available, including roadside assistance and rental reimbursement
- Nearly two decades of experience in the vehicle service contract industry
- Coverage similar to factory’s bumper-to-bumper warranty
- $1.5 billion+ in claims paid since 2009 (3.8M+ customers)
- 24/7 roadside assistance included
- Rental car reimbursement for up to 7 days
- Cancel anytime with a pro-rated refund
- Transferable to new owner (fee applies)
- Roll into monthly car payment or pay upfront
- Detailed sample contracts are difficult to access before purchase
- Mixed customer reviews with recurring complaints about claims and communication
- Limited digital tools, with no mobile app or live chat support
- Only available during a CarMax vehicle purchase, not after
- Independent shops may not accept MaxCare
- Pre-approval required for all repairs
- Maintenance items excluded (batteries, brakes, tires, wiper blades)
- Strict documentation requirements; DIY receipts often rejected
- Third-party administrators handle claims, not CarMax
- No online claims portal; phone support only
Diamond Warranty is a Pennsylvania-based vehicle service contract provider founded in 2006. Operating through a nationwide network of dealerships, they offer several levels of protection designed to help drivers manage repair expenses after factory warranties expire. Their plans range from basic powertrain coverage to broader exclusionary contracts, with options for used vehicles, certified pre-owned models, and drivers seeking long-term protection.
Many contracts are backed by AmTrust Financial Services and may include benefits such as roadside assistance, rental car reimbursement, and trip interruption coverage. The company focuses on dealer-distributed service contracts rather than direct online sales, which means pricing and contract details often vary by vehicle and dealership. Diamond Warranty maintains an A+ rating from the Better Business Bureau, though they are not BBB accredited.
Customer feedback across review platforms is mixed, with experiences ranging from praise for responsive representatives and straightforward claims to complaints involving coverage disputes and communication challenges. With nearly two decades in the industry and a diverse selection of plans, the provider offers several features worth examining more closely before making a decision.
MaxCare is an extended vehicle service contract introduced by CarMax in 2009, available exclusively at the time of purchasing a vehicle through their dealership network. Unlike many third-party warranty providers that offer multiple plan tiers, MaxCare uses a single exclusionary coverage model, similar to a factory bumper-to-bumper warranty, covering most mechanical and electrical components except for a defined list of exclusions. Contracts are tailored to each vehicle, with coverage typically extending up to 75,000 to 150,000 total odometer miles. While CarMax facilitates the customer experience, the plans are administered by third-party providers such as Fidelity Warranty Services and CNA National Warranty Corporation. Key benefits include 24/7 roadside assistance, rental car reimbursement, transferable coverage, and flexible payment options, including rolling the cost into monthly financing. A $50 deductible discount is also offered when using CarMax service centers or RepairPal-certified shops. Customer feedback is mixed, with many reporting strong coverage for major repairs, while others cite delays, strict claim requirements, and challenges when working with independent repair facilities.
- BBB Rating : N/R (unaccredited)
- Maximum Mileage : Up to 100,000 miles
- Number of Plans Available : 6
- Operating Status : Active
- Deductible Range : Quote-based
- BBB Rating : N/R (A- for CarMax)
- Maximum Mileage : 150,000 miles (varies by plan)
- Money-Back Guarantee : Available (pro-rated refund; fee may apply
- Number of Plans Available : 1
- Waiting Period : None for coverage; 30 days/1,000 miles for pre-existing conditions
- Operating Status : Active
- Deductible Range : $50–$300
- Most plans begin on day one and mile one rather than requiring a standard waiting period
- Specialized coverage options for certified pre-owned vehicles and long-term 5-year/100,000-mile powertrain protection
- Dealer-focused distribution model that allows coverage to be bundled into vehicle financing
- Broad plan portfolio that includes both stated-component and exclusionary coverage levels
- $50 deductible discount at dealer’s service centers and RepairPal shops
- Available on any used car sold by CarMax, regardless of year, make, or mileage
- Over 670,000 rental cars loaned to customers since 2009
- No waiting period for coverage
- High-mileage
- Exclusionary
- Powertrain
- $0 deductible option—Undisclosed
- Commercial/rideshare
- EV/hybrid components
- No waiting period—Undisclosed
- Option with free maintenance benefits
- Transferable
- High-mileage—Undisclosed
- Exclusionary
- Powertrain—Undisclosed
- $0 deductible option
- Commercial/rideshare
- EV/hybrid components
- No waiting period
- Option with free maintenance benefits
- Transferable—Undisclosed
- 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
- 24/7 roadside assistance
- Any licensed repair shop
- Direct shop payment
- In-network repair network
- Mobile app for claims
- Online claims portal—Undisclosed
- Trip interruption coverage
- Phone
- 24/7 customer support
- FAQs / Educational resources
- Live Chat
- Mobile Application
- Online quote without phone
- Sample contracts online
- Phone
- 24/7 customer support
- FAQs / Educational resources
- Live Chat
- Mobile Application
- Online quote without phone
- Sample contracts online
- Contract (lump-sum) payments
- Pay-in-full discount
- Month-to-month payments
- 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
- Contract (lump-sum) payments
- Pay-in-full discount—Undisclosed
- 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
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