Shoppers who opt for AI-powered smart grocery carts may be spending significantly more, with one study finding an average increase of 32% in their grocery bills. These advanced carts, equipped with screens offering directions, coupons, and product suggestions, also led users to purchase more items and spend longer in stores, according to research from Bayes Business School at City St George's, University of London.
The study, published in the Journal of Business Research, analyzed over 12,000 shopping sessions at a German supermarket chain in March 2025. Researchers observed that shoppers using smart carts, which feature tablet-style screens for digital lists, navigation, and personalized recommendations, spent 32% more on average compared to those using traditional carts. These users also bought 25% more items and spent 23% more time in the store.
Retailers may view these smart carts as a valuable tool for increasing revenue. The screens provide a new platform for advertising and direct engagement with shoppers at the point of decision-making. Dr. Sabrina Gottschalk, lead author of the study, noted that personalized offers and product recommendations could drive significant sales gains.
However, the study acknowledges a limitation: it found an association between smart cart use and higher spending, but cannot definitively prove causation. Shoppers who choose smart carts might already intend to make larger purchases or be more interested in technology that aids navigation. The research also noted that shoppers who interacted with the cart screen more than 20 times during a trip, termed "superusers," did not necessarily spend more overall, suggesting some might be drawn to the technology for the experience itself.
These AI shopping carts are already present in the U.S. Instacart reports that thousands of its AI-powered Caper Carts are in use across more than 100 cities, spanning 15 states and available through various retail banners including Kroger and Schnucks. Amazon's Dash Cart is also expanding to more Whole Foods Market locations by the end of 2026. These carts utilize cameras, sensors, and scales to track items, display running totals, and offer deals.
Beyond recommendations, the data collected by these carts is also noteworthy. Caper Carts use basket-facing cameras, outward-facing cameras, scales, and location tracking to monitor what shoppers put in or take out of their carts and how they move through the store. This data can be linked to purchase history to refine recommendations, raising privacy considerations for consumers.
To manage spending while using smart carts, experts suggest starting with a detailed shopping list, monitoring the running total displayed on the cart, and treating recommendations as advertisements that may not always align with planned purchases. It is also advised to verify actual prices and compare unit prices, especially for different package sizes.
While the technology offers convenience, such as potentially skipping checkout lines and providing helpful lists, the study's findings on increased spending highlight the importance of mindful shopping. Consumers are encouraged to pay attention to how these smart carts influence their purchasing decisions, balancing convenience with budget adherence.