When close to half the companies in the United States have price-to-earnings ratios (or "P/E's") above 19x, you may consider General Motors Company (NYSE:GM) as a highly attractive investment with its 4.6x P/E ratio. Nonetheless, we'd need to dig a little deeper to determine if there is a rational basis for the highly reduced P/E.

With its earnings growth in positive territory compared to the declining earnings of most other companies, General Motors has been doing quite well of late. It might be that many expect the strong earnings performance to degrade substantially, possibly more than the market, which has repressed the P/E. If not, then existing shareholders have reason to be quite optimistic about the future direction of the share price.

Does Growth Match The Low P/E?

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

Retrospectively, the last year delivered an exceptional 23% gain to the company's bottom line. EPS has also lifted 12% in aggregate from three years ago, mostly thanks to the last 12 months of growth. So we can start by confirming that the company has actually done a good job of growing earnings over that time.

Turning to the outlook, the next three years should generate growth of 0.2% per year as estimated by the analysts watching the company. That's shaping up to be materially lower than the 10% each year growth forecast for the broader market.

In light of this, it's understandable that General Motors' P/E sits below the majority of other companies. It seems most investors are expecting to see limited future growth and are only willing to pay a reduced amount for the stock.

The Key Takeaway

It's argued the price-to-earnings ratio is an inferior measure of value within certain industries, but it can be a powerful business sentiment indicator.

We've established that General Motors maintains its low P/E on the weakness of its forecast growth being lower than the wider market, as expected. Right now shareholders are accepting the low P/E as they concede future earnings probably won't provide any pleasant surprises. It's hard to see the share price rising strongly in the near future under these circumstances.

Don't forget that there may be other risks. For instance, we've identified 2 warning signs for General Motors that you should be aware of.

Of course, you might find a fantastic investment by looking at a few good candidates. So take a peek at this free list of companies with a strong growth track record, trading on a low P/E.

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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.