Vehicle Remarketing Logo

CDK Outage Skyrocketed Vehicle Days’ Supply

A cyber breach at a widely used dealer management system heavily affected the automotive industry, slowing sales and reporting in the second half of June.

CDK Outage Skyrocketed Vehicle Days’ Supply

The chart illustrates the impact of the market disruptions that started in mid-June. Inventory volume maintained a steady level. However, sales noticeably fell off after the mid-month point and continued falling into the start of July. The 30-day new-vehicle sales trend dropped 30% month over month in that timeframe, which can be largely attributed to the outage and indicates why inventory, as measured by days’ supply, is abnormally high at the start of July.

Graphic: Cox Automotive

2 min to read


The CDK Global dealership software outage dramatically inflated days’ supply last month to 116, new Cox Automotive data shows, which is extremely abnormal and one of the highest measures on record, second only to April 2020.

The disruption, which affected thousands of dealerships nationwide that conducted business without dealer-management system access and other tech tools, clearly slowed sales, according to Cox figures released July 18.

Ad Loading...

New-vehicle days’ supply started July at 116, just before CDK brought most of its dealer customers back online. Cox says that’s one of the highest days’ supply ever, lower only than that of April 2020, just after pandemic lockdowns began. June opened at 81 days’ supply.

That’s up 110% year-over-year and obviously abnormal for any time of year, Cox pointed out, but it said the metric should normalize as CDK fully restores its various software systems.

In addition to the software shutdown, Cox said extreme summer weather events and power outages in some areas may also have dampened sales, including in Houston, which it said is one of the biggest U.S. automotive markets.

Total U.S. inventory ended June at 2.9 million, up 52% year-over-year, Cox said.

Vehicle Prices Still Well Above 2019 Levels

The average listing price for a new vehicle at the start of July was $47,384, lower by $109 compared to one year ago. Listing prices have seemingly stabilized, and while this is good for consumer expectations and planning, affordability remains an issue, with prices still well above 2019 levels.

Ad Loading...

The average transaction price (ATP) of a new vehicle in the U.S. in June was $48,644, statistically unchanged from a month prior, according to Kelley Blue Book. The average new-vehicle incentive package, which includes discounts and rebates, fell to 6.4% of ATP ($3,102) last month, down from 6.7% in May but higher than one year ago when incentives were 4.2% of ATP ($2,036).

Many top sellers pulled back on incentives in June despite higher inventory levels. However, Cox expects incentives and discounts to stay and potentially increase, especially with the latest Fed decision, meaning there will be no near-term relief on interest rates.

Originally posted on Automotive Fleet

More Fleet

Collage of CAR speakers
Used Vehicle Valuesby Chris BrownApril 27, 2026

CAR2026 in Two Words: Velocity, Value (Part 1)

The 2026 Conference of Automotive Remarketing convened with a mandate to involve a new constituency — fleet managers — and an updated mission to demonstrate unrealized value in de-fleeted vehicles.

Read More →
Fleet Remarketing Association temp logo
Fleetby Chris BrownApril 20, 2026

Launch of Fleet Remarketing Association Signals New Era for Vehicle Lifecycle Value and Data Stewardship

The Association, dedicated to advancing the remarketing phase of the vehicle lifecycle, held its kick-off meeting on April 16 at the 2026 Conference of Automotive Remarketing (CAR) in Cleveland.

Read More →
Line comparisons of used vehicle inventory set in different colors.
Fleetby News/Media ReleaseApril 20, 2026

March Used Vehicle Inventory Falls To Lowest Since 2019

Franchised and independent dealers had a total of 1.95 million used vehicles in stock in March, the lowest on record in the current data set.

Read More →
Ad Loading...
Green and black bar graphs showing March 2025 versus March 2026 commercial fleet sales.
Fleetby Martin RomjueApril 2, 2026

Quarterly, Monthly Commercial Fleet Sales Flying Higher

The fleet sector is performing stronger than last year, outpacing the rental and government fleet sectors.

Read More →
Graphic promoting CAR 2026 roundtables featuring headshots of five speakers and topics including Wall Street trends, fleet data, upfits, fair market value, and AI in remarketing.
Operationsby Chris BrownMarch 31, 2026

CAR 2026: Get the Wall Street Update on the Key Players in Remarketing

From a Wall Street analyst's take on remarketing's key players to whether fleets need their own version of Carfax, CAR 2026's afternoon roundtables will answer key operational and industry questions.

Read More →
Promotional graphic for CAR 2026 panel on data-driven value in commercial vehicles, featuring five industry experts and session details for April 16 in Cleveland.
Fleetby Chris BrownMarch 31, 2026

CAR 2026 Session to Uncover the Missing Data That's Costing Fleets at Disposal

Work trucks lose value at remarketing, not because they aren't worth more, but because the data to prove it rarely makes it to the auction.

Read More →
Ad Loading...
Chart highlighting February EV sales trends, showing a decline in new EV sales and growth in used EV sales based on Cox Automotive market data.
Fleetby News/Media ReleaseMarch 19, 2026

EV Market Feeling The New Reality Of Steep Losses

New EV sales declined year over year in February while used EV demand rose, as prices fell and inventory tightened across both segments.

Read More →
Technician handling electric vehicle battery components in a recycling facility as Cox Automotive expands EV battery processing and material recovery operations.
Fleetby News/Media ReleaseMarch 17, 2026

Cox Automotive Amasses EV Battery Minerals

The company has processed more than 10 million pounds of EV battery black mass, highlighting growing demand for recycling and lifecycle management as more electric vehicles enter the used market.

Read More →
Graphic promoting a CAR 2026 conference session showing four speaker headshots above the title “What Really Moves Vehicle Value Now — And What Doesn’t” with automotive conference branding
Operationsby Chris BrownMarch 11, 2026

CAR 2026: What Really Moves Vehicle Value Now — And What Doesn’t

A panel at the 2026 Conference of Automotive Remarketing will examine how resale value is created across the vehicle lifecycle and which traditional remarketing practices still deliver ROI.

Read More →
Ad Loading...
Blue bar graphs showing a rise in used vehicle categories across the board.

Wholesale Used Vehicle Prices Up In February

Solid demand at Manheim auctions with higher sales conversion rates indicate an appetite from dealers to buy.

Read More →