CornerStone United Reviews

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Edited by: Joseph Santos

About CornerStone United

CornerStone United offers vehicle service contracts for new and pre-owned vehicles. The company has plans for vehicles exceeding 200,000 miles as well as coverage options for modified, commercial and exotic cars. Most plans also come with additional benefits, including towing assistance and rental car reimbursement.

Pros
  • Flexible plans with optional add-on coverages
  • Offers coverage for often-excluded vehicles
  • Contract transferable if you sell your car
Cons
  • Only sells through dealerships
  • No online price quotes
  • Complex plan options

Our editor’s take

If you have a vehicle that’s normally excluded from warranty coverage, CornerStone United may be a good option for you. It covers vehicles that most warranty companies won’t, and it has a variety of plan options to fit different needs. At the time of publishing, we don’t have any consumer reviews for Cornerstone United (and we weren’t able to get price quotes for our sample vehicles), so it’s tough for us to offer a definitive judgment, but you might want to keep the company in mind as you shop.

About CornerStone United

CornerStone United provides a range of coverage options for passenger vehicles, recreational vehicles (RVs), off-road vehicles and watercraft. Its vehicle service contracts offer coverage for mechanical breakdowns. Additionally, the company has products to maintain your car’s appearance, such as tire and wheel coverage, dent protection and windshield repair coverage.

The company has operated for over 50 years and has locations in the United States and Canada. It’s headquartered in Hickory, North Carolina, with a second location in London, Ontario. Its customer support staff can offer assistance in English, Spanish and French. However, you can only buy CornerStone United products through a participating dealer. The company doesn’t sell its vehicle service contracts directly to customers.

» LEARN: What is a vehicle service contract?

CornerStone United availability

CornerStone United operates across the United States and Canada, and its vehicle service contracts can protect new, pre-owned and high-mileage vehicles, including those exceeding 20 years of age or with 200,000 miles on their odometers.

However, it offers different products depending on the age and mileage of your vehicle, and some benefits may not be available in all states. Contact a participating dealer for more information about the benefits, terms and conditions where you live.

CornerStone United coverage and plans

CornerStone United offers a wide variety of vehicle service contracts and warranty programs.

The Xtra Series (which is designed for older, high-mileage vehicles) has four plans, ranging from a basic powertrain plan to comprehensive coverage for most vehicle parts. You can also choose add-on options for the three lower-tier plans to customize your coverage.

Meanwhile, CornerStone United’s Xpanded series covers cars up to more than 20 years old or with up to 200,000 miles. The company offers plans for luxury vehicles, such as Alfa Romeos and the Porsche 911 Turbo.

Here’s a breakdown of the coverage you can get with the Xpanded series.

» LEARN: What does a car warranty cover?

CornerStone United coverage limits

Like other companies with vehicle service contracts, CornerStone United sets coverage limits for how much it pays to repair or replace parts for your vehicle. However, CornerStone United doesn’t specify coverage limits online, so be sure to ask when you get a quote for a contract.

CornerStone United cost

CornerStone United sells its products through select dealerships and doesn’t make its prices publicly available. If you want to purchase a CornerStone United vehicle service contract, contact a participating dealership for a quote. You can call CornerStone United to find a participating dealer in your area.

» MORE: How much does an extended car warranty cost?

CornerStone United benefits

CornerStone United offers some additional benefits besides repair coverage. The benefits and limits depend on your plan, so speak with your dealership to learn what’s included in each policy.

CornerStone United policies

When purchasing a vehicle service contract from CornerStone United, make sure you review the plan carefully to understand the terms and conditions.

For most contracts, you’re allowed to transfer the plan to the next owner if you sell your vehicle privately (not to a dealer).

To cancel your contract, contact the dealership that sold it to you. If it’s gone out of business, you can contact CornerStone United directly. The cancellation process can take up to 30 days.

CornerStone United FAQ

How does CornerStone United work?

CornerStone United sells vehicle service contracts through participating dealerships in the United States and Canada. That means you don’t purchase a plan through CornerStone United. Instead, you contact a participating dealership to get a quote, review your plan options and buy a policy.

How do I file a claim with CornerStone United?

When you need to file a claim, contact CornerStone United by phone. If you’ve taken your car to a dealership or a licensed repair shop, you can have it call the company for you. CornerStone United must authorize the repairs before any work begins on your vehicle.

Is CornerStone United legit?

CornerStone United is a legitimate company that offers vehicle service contracts for extended warranty coverage. It sells these contracts through participating dealerships, so you’ll need to contact a dealer to purchase one of its plans.

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CornerStone United Reviews

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    Tech

    Reviewed April 25, 2025

    I am a used dealership in Elkhart, IN the RV Capital of the World… Our dealership can no longer sell Cornerstone United since the customers I sell the extended service have used the services too much.., Excuse me.., When you pay 3000 dollars for a 48 month warranty you ought to be able to use the services you purchase… Please seek another place for your extended service plan… This is the first sign of financial difficulties…"Thank you for paying an arm and leg for this service, we will punish the dealer for selling it to you if you use our promise for warranty…." Stay far away from Cornerstone United..,when an F and I manager takes out their fake contract—tear it up and walk way… It isn’t worth the paper contract it is printed on… I will be telling all of my customers who come to the Elkhart RV Capital what a fraud you are…

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    Coverage

    Reviewed March 14, 2025

    If I could give them zero stars I would. We bought a Chevy Silverado last Jan. I've only put 450 miles on it in a year, not once have I needed a repair in that year. Recently I started leaking gas. First off it started smelling bad after the mechanic said it was the top of the fuel pump which had rusted out. I contacted them only to find out that they wouldn't cover it because it was rusted. It's ny everything rusts to some extent. Keep in mind that fuel delivery coverage was one of three boxes checked off on my warranty list. You tell me how ridiculous it is the amount everyone pays for cars these and parts labor etc. I will be filing a complaint with the BBB. Cornerstone you are a totally trash company and I'm gonna make sure everyone I come across knows not to purchase a warranty of any kind whatsoever. Thanks for nothing. Sincerely yours "AN INCREDIBLY PISSED CUSTOMER "🤬

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      Claims HandlingCoverage

      Reviewed Nov. 26, 2024

      I purchased a warranty for my 2012 Porsche 911 in February of 2022 through Xtended Auto Warranty which is owned by Cornerstone United. I purchased a XP-3 warranty and it is a 36-month warranty and I never had to use the warranty until today. My rear axles need to be replaced and the repair shop sends in a claim. This company deny the claim and say that the axles aren't covered.

      If you look at the pamphlet, under XP-2 it clearly says drive axles. No surprise that this fraudulent company would deny the claim just like all the other claims they have denied with other people. They list all these mechanical and electrical components that they cover but under the exclusion list the items cancel each other out. Example: Engine seized up due to no oil. No oil because a bad gasket/seal/o-ring. Guess what, not covered because gasket/seal/o-ring are on the exclusion list. Talking to my lawyer now and will be reaching out to other people who were scammed and start a class-action lawsuit.

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        CornerStone United Company Information

        Company Name:
        CornerStone United
        Address:
        1020 Main Ave. NW
        City:
        Hickory
        State/Province:
        NC
        Postal Code:
        28601
        Website:
        cornerstoneunited.com

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