Bill Nash
President and Chief Executive Officer at CarMax
Great. Thank you, David. Good morning, everyone, and thanks for joining us. We are very pleased with the continued positive trends across our diversified business during the third quarter with retail, wholesale and CAF, all posting year-over-year gains. Our solid execution in a more stable environment for vehicle valuations enabled us to deliver robust EPS growth as we drove unit volume increases in sales and buys, maintained strong margins, stabilized the provision for loan losses and realized cost efficiencies.
Our results reflect the strength of our business model and we are excited about the opportunities that lie ahead. Our best-in-class omnichannel experience is and will continue to be a key differentiator that gives us access to the largest total addressable market in the used car space and provides a strong runway for future growth.
In the third quarter, we grew retail and wholesale unit volume year over year. We delivered strong retail and wholesale GPUs, expanded EPP gross profit and improved service gross profit year over year. We bought more vehicles from both consumers and dealers year over year, achieving a third quarter record with dealers. We grew CAF income year over year and continued to advance our full credit spectrum underwriting model. We materially levered SG&A as a percent of gross profit and we achieved double-digit EPS growth. For the third quarter of FY '25, our diversified business model delivered total sales of $6.2 billion, up 1% compared to last year, reflecting higher volume, partially offset by lower prices.
In our retail business, total unit sales increased 5.4% and used unit comps were up 4.3%. Average selling price declined approximately $1,100 per unit or 4% year over year. Third quarter retail gross profit per used unit was $2,306, in line with last year's $2,277. Wholesale unit sales were up 6.3% versus the third quarter last year. Average selling price declined approximately $500 per unit or 6% year over year. Third quarter wholesale gross profit per unit was $1,015, up from $961 a year ago. We bought approximately 270,000 vehicles during the quarter, up 8% from last year. We purchased approximately 237,000 vehicles from consumers with more than half of those buyers coming through our online instant appraisal experience.
With the support of our Edmunds sales teams, we sourced the remaining approximately 33,000 vehicles through dealers, which is up 47% from last year. We continue to see increased adoption of our omnichannel retail experience. For the third quarter, approximately 15% of retail unit sales were online, up from 14% last year. Approximately 56% of retail unit sales were omni sales this quarter, up from 55% in the prior year. Total revenue from online transactions was approximately 32%, up from 31% last year. All of our third quarter wholesale auctions and sales were virtual and are considered online transactions, which represents 19% of total revenue for the quarter.
CarMax Auto Finance, or CAF, delivered income of $160 million, up 8% from the same quarter last year. In a few minutes, Jon will provide more detail on customer financing, the loan loss provision, CAF contribution and our progress on full credit spectrum lending. At this point, I'd like to turn the call over to Enrique, who will share more information on our third quarter financial performance. Enrique?