When close to half the companies in the United States have price-to-earnings ratios (or "P/E's") above 17x, you may consider Autohome Inc. (NYSE:ATHM) as an attractive investment with its 12.3x P/E ratio. However, the P/E might be low for a reason and it requires further investigation to determine if it's justified.

Autohome certainly has been doing a good job lately as its earnings growth has been positive while most other companies have been seeing their earnings go backwards. One possibility is that the P/E is low because investors think the company's earnings are going to fall away like everyone else's soon. If you like the company, you'd be hoping this isn't the case so that you could potentially pick up some stock while it's out of favour.

Keen to find out how analysts think Autohome's future stacks up against the industry? In that case, our free report is a great place to start.

How Is Autohome's Growth Trending?

The only time you'd be truly comfortable seeing a P/E as low as Autohome's is when the company's growth is on track to lag the market.

Retrospectively, the last year delivered a decent 6.0% gain to the company's bottom line. Still, lamentably EPS has fallen 44% in aggregate from three years ago, which is disappointing. So unfortunately, we have to acknowledge that the company has not done a great job of growing earnings over that time.

Shifting to the future, estimates from the analysts covering the company suggest earnings should grow by 1.7% per year over the next three years. That's shaping up to be materially lower than the 11% per year growth forecast for the broader market.

With this information, we can see why Autohome is trading at a P/E lower than the market. Apparently many shareholders weren't comfortable holding on while the company is potentially eyeing a less prosperous future.

The Bottom Line On Autohome's P/E

Using the price-to-earnings ratio alone to determine if you should sell your stock isn't sensible, however it can be a practical guide to the company's future prospects.

As we suspected, our examination of Autohome's analyst forecasts revealed that its inferior earnings outlook is contributing to its low P/E. Right now shareholders are accepting the low P/E as they concede future earnings probably won't provide any pleasant surprises. Unless these conditions improve, they will continue to form a barrier for the share price around these levels.

You should always think about risks. Case in point, we've spotted 1 warning sign for Autohome you should be aware of.

If P/E ratios interest you, you may wish to see this free collection of other companies with strong earnings growth and low P/E ratios.

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This article by Simply Wall St is general in nature. We provide commentary based on historical data and analyst forecasts only using an unbiased methodology and our articles are not intended to be financial advice. It does not constitute a recommendation to buy or sell any stock, and does not take account of your objectives, or your financial situation. We aim to bring you long-term focused analysis driven by fundamental data. Note that our analysis may not factor in the latest price-sensitive company announcements or qualitative material. Simply Wall St has no position in any stocks mentioned.