Costco probably isn’t the first place you’d associate with a rugged British off-roader costing north of $70,000. Yet the warehouse retailer’s auto-buying program now has a deal aimed specifically at shoppers considering an Ineos Grenadier.
Eligible Costco Executive Members can receive $2,000 toward the purchase or lease of a new 2026 or 2027 Grenadier. The promotion covers both the Station Wagon SUV and the Quartermaster pickup.
There’s another perk on top of the vehicle discount. Buyers can also receive a $1,000 credit toward Ineos accessories, potentially making the Costco offer worth $3,000 in total benefits.
The promotion began October 1, 2026, and runs through January 4, 2027. There is an important catch, though: shoppers who weren’t already Costco members by September 30 aren’t eligible to sign up now and immediately claim the offer.
You’ll Need A Costco Executive Membership
The promotion is available specifically to Executive Members rather than Costco’s entire membership base. Eligible shoppers need to register through the Costco Auto Program and obtain a promotion certificate before heading to a participating Ineos dealer.
Costco’s Auto Program normally connects members with approved dealerships offering prearranged pricing. In this case, the $2,000 Grenadier incentive is added to that buying process, while the separate $1,000 credit can be spent on accessories.
Customers must take delivery by January 4 to qualify. Both purchasing and leasing are eligible, giving buyers some flexibility in how they put a Grenadier in the driveway.
The Costco Discount Can Stack With Ineos Deals
A $2,000 discount isn’t enormous against the Grenadier’s $70,000-plus starting price, although things get more interesting when other incentives enter the equation. The Costco offer can be combined with eligible discounts available directly from Ineos.
Current Ineos offers reportedly include $1,000 customer cash on basic Grenadier models, $2,000 on the 2026 Fieldmaster, and $3,000 on the Trailmaster. The Trailmaster X also carries a $2,000 cash incentive.
Combine the $3,000 Trailmaster incentive with Costco’s $2,000 vehicle discount and $1,000 accessory credit, and the total value can reach $6,000. Naturally, buyers will want to confirm eligibility and current incentives with the participating dealer before signing anything.
Both Grenadier Body Styles Qualify
The offer isn’t limited to the conventional Grenadier Station Wagon. Costco members interested in the Quartermaster dual-cab pickup can claim the same promotion.
Ineos is looking to grow its U.S. sales, and getting the Grenadier in front of Costco’s large membership base certainly won’t hurt. A $2,000 discount alone probably won’t turn someone into a Grenadier buyer, but stacked incentives approaching $6,000 could make the numbers easier to justify.