What happened Shares of auto parts retailer AutoZone (NYSE: AZO) soared by 21.1% in March, according to data provided by S&P Global Market Intelligence. That upward surge was driven by the robust earnings report that the company released early in the month. For its fiscal second quarter, which ended Feb. 13, AutoZone reported excellent same-store sales growth of 15.2%, demonstrating that it had recovered from the pandemic's impact. Data source: AutoZone presentations. Chart refers to stores open for more than one year. Chart by author. Discussing the retail environment, CEO Bill Rhodes noted that "many performance metrics remained at historically high levels." He also referred to a number of tailwinds, including government stimulus packages boosting DIY sales, and a "change in consumer behavior as a result of the pandemic." Meanwhile, AutoZone's commercial sales were up 15% in the quarter as management continued to pursue market share in the fragmented Do-It-For-Me (DIFM) marketplace. So what The environment today looks positive for auto parts retailers. An economic recovery is looking likely, and the return of warm spring weather usually leads to an increase in the number of vehicle miles driven, which in turn leads to higher demand for auto parts. And if pandemic-driven concerns about being in confined spaces with strangers persist, more people will be looking to avoid using public transport. Their increased use of private cars for transportation will lead to additional sales for auto parts retailers. Image source: Getty Images. Also, new vehicle sales have been sluggish during the pandemic. So U.S. drivers are attempting to keep a larger number of older cars on the road, and those vehicles tend to need more repair work -- and more spare parts. Now what Wall Street analysts rushed to raise their price targets and ratings for AutoZone in the weeks after the earnings report was released, anticipating that many of the conditions that drove its strong performance are likely to persist for much of 2021. Meanwhile, AutoZone's potential to grab market share in the faster-growing DIFM market should give investors confidence in the retailer's future. 10 stocks we like better than AutoZoneWhen investing geniuses David and Tom Gardner have a stock tip, it can pay to listen. After all, the newsletter they have run for over a decade, Motley Fool Stock Advisor, has tripled the market.* David and Tom just revealed what they believe are the ten best stocks for investors to buy right now... and AutoZone wasn't one of them! That's right -- they think these 10 stocks are even better buys. See the 10 stocks *Stock Advisor returns as of February 24, 2021 Lee Samaha has no position in any of the stocks mentioned. The Motley Fool has no position in any of the stocks mentioned. The Motley Fool has a disclosure policy.Source