Is the Rolls-Royce share price still undervalued in 2025?

After massive growth in the Rolls-Royce share price, Charlie Carman considers whether the FTSE 100 aerospace and defence stock is still cheap today.

| More on:

The content of this article was relevant at the time of publishing. Circumstances change continuously and caution should therefore be exercised when relying upon any content contained within this article.

Road 2025 to 2032 new year direction concept

Image source: Getty Images

You’re reading a free article with opinions that may differ from The Motley Fool’s Premium Investing Services. Become a Motley Fool member today to get instant access to our top analyst recommendations, in-depth research, investing resources, and more. Learn More.

The Rolls-Royce (LSE:RR.) share price has delivered spectacular growth in recent years. No other FTSE 100 stock comes close to matching its 568% advance over five years.

With the shares trading for £7.24 each today, does the British engineering giant offer good value for new investors? Or has optimism surrounding the business already been priced in?

Here’s my take.

Valuation metrics

To ascertain whether the Rolls-Royce share price is still cheap, it’s worth starting by looking at widely used valuation metrics.

Let’s begin with the price-to-earnings (P/E) ratio. Rolls-Royce shares currently trade for a P/E multiple of around 24.4. On a forward P/E basis, they’re even pricier with a ratio of nearly 31.

Compared to the average 16.3 times multiple across FTSE 100 stocks, the jet engine maker seems expensive. That’s a risk for investors today. It suggests there’s little room for error in the company’s financial results, and future shareholder returns may not be as promising as they’ve been in recent years.

The P/E-to-growth (PEG) ratio can provide further clues, since this metric accounts for expected revenue improvements. Traditional investing wisdom dictates that a PEG ratio below one is a good sign that a stock’s potentially undervalued.

Unfortunately, the expected five-year PEG multiple for Rolls-Royce is nearly 2.3. That’s another signal that the stock isn’t the bargain it once was. At least investors can take solace in the fact that these numbers look more reasonable compared to US industry competitors like GE Aerospace and Honeywell International, even if not against other UK shares.

Paying a premium

Overall, it’s fair to say there are valuation risks associated with the Rolls-Royce share price today. But numeric formulas aren’t everything. Legendary investor Charlie Munger was famously sceptical of their utility. He viewed investing as both an art and a science.

So, how does Rolls-Royce stack up on some key tests Munger used to assess a stock’s true value?

First, the business needs a strong competitive advantage and a wide economic moat. Here, I think the company triumphs. Rolls-Royce’s aircraft engines have a longstanding reputation for their high quality, reliability, and efficiency.

On defence, the firm’s a preferred supplier to the UK government, evidenced by the recent £9bn contract awarded to support the Royal Navy’s nuclear submarine fleet. Furthermore, Rolls-Royce has been a pioneer in developing small modular reactor technology, which could prove critical in supplying low-carbon energy.

Second, Munger placed great importance on a company’s management. Few would doubt the abilities of Rolls-Royce CEO Tufan Erginbilgiç. Having taken over what he described as a “burning platform“, he’s transformed the business into a highly profitable enterprise, restored the firm’s credit rating to investment grade, and resumed dividend payments.

Third, financial strength is also crucial. There’s a lot to like on this front. Rolls-Royce’s operating margin has improved to 13.8% from 5.1% in 2022, free cash flow climbed in the same period from £0.5bn to £2.4bn, and return on capital increased from 4.9% to 13.8%.

Although the Rolls-Royce share price probably isn’t undervalued today, I think today’s level is a fair reflection of the investment opportunity. It’s a stock that still deserves consideration in my view, and I hope Munger would agree if he was still with us!

Charlie Carman has positions in Rolls-Royce Plc. The Motley Fool UK has recommended Rolls-Royce Plc. Views expressed on the companies mentioned in this article are those of the writer and therefore may differ from the official recommendations we make in our subscription services such as Share Advisor, Hidden Winners and Pro. Here at The Motley Fool we believe that considering a diverse range of insights makes us better investors.

More on Investing Articles

Investing Articles

Will Greggs shares crash again in 2026?

After a horrible 2025, Paul Summers takes a look at whether Greggs shares could sink even further in price next…

Read more »

Investing Articles

This quantum computing growth stock could skyrocket 113%, says 1 broker

One team of analysts on Wall Street have put a $100 price target on this high-growth tech stock. Should I…

Read more »

Black father and two young daughters dancing at home
Investing Articles

Here’s how you can invest £5,000 in UK stocks to earn a second income

Zaven Boyrazian explains how investing £5,000 in UK stocks could potentially unlock a second income of up to £1,100 in…

Read more »

Investing Articles

My top 2 disruptive growth stocks to consider buying in 2026

Looking for stocks to buy? Find out why our writer likes this pair of explosive growth shares that have sold…

Read more »

Investing Articles

Prediction: these near-penny stocks could be among 2026’s big winners

Zaven Boyrazian breaks down two almost penny stocks that expert investors believe could surge next year, delivering between 35% and…

Read more »

Two elderly people relaxing in the summer sunshine Box Hill near Dorking Surrey England
Investing Articles

At 13.2%, this passive income stock has the highest yield on the FTSE 250. And it trades at a 40% discount

Our writer takes a look at the highest-yielding FTSE 250 passive income stock. But how sustainable is this return? Could…

Read more »

Businessman hand stacking money coins with virtual percentage icons
Investing Articles

396 Reckitt Benckiser shares gets me a £1,000 monthly second income. Should I buy more?

Our writer looks into the recovery potential of Reckitt Benckiser, calculating how many shares would deliver decent second income. But…

Read more »

A mature adult sitting by a fireplace in a living room at home. She is wearing a yellow cardigan and spectacles.
Investing Articles

Not using a SIPP? Here’s how much money you could be missing out on…

Over the last 25 years, some smart SIPP investors have made almost £3.5m by putting aside just £500 a month!…

Read more »