WPRT vs CLNE

For growth investors, Clean Energy Fuels Corp.

(CLNE) is the stronger pick with 2. 2% revenue growth year-over-year, versus -8. 9% for Westport Fuel Systems Inc. (WPRT). Analysts rate Clean Energy Fuels Corp. (CLNE) a "Buy" — based on 22 analyst ratings — the highest consensus in this comparison. The "better buy" depends entirely on your goals: growth investors should weight revenue trajectory, value investors should weight P/E and PEG, and income investors should weight dividend yield and streak.

Over the past 5 years, Clean Energy Fuels Corp.

(CLNE) delivered a total return of -77. 1%, compared to -96. 8% for Westport Fuel Systems Inc. (WPRT). Over 10 years, the gap is even starker: CLNE returned -28. 9% versus WPRT's -91. 7%. Past returns do not guarantee future results, and the stock with the higher historical return may already have its best growth priced in.

By beta (market sensitivity over 5 years), Westport Fuel Systems Inc.

(WPRT) is the lower-risk stock at 0. 88β versus Clean Energy Fuels Corp. 's 1. 19β — meaning CLNE is approximately 35% more volatile than WPRT relative to the S&P 500. On balance sheet safety, Clean Energy Fuels Corp. (CLNE) carries a lower debt/equity ratio of 18% versus 39% for Westport Fuel Systems Inc. — giving it more financial flexibility in a downturn.

By revenue growth (latest reported year), Clean Energy Fuels Corp.

(CLNE) is pulling ahead at 2. 2% versus -8. 9% for Westport Fuel Systems Inc. (WPRT). On earnings-per-share growth, the picture is similar: Westport Fuel Systems Inc. grew EPS 56. 9% year-over-year, compared to -173. 0% for Clean Energy Fuels Corp.. Over a 3-year CAGR, CLNE leads at 0. 4% annualised revenue growth. Higher growth typically commands a higher valuation multiple — check whether the premium P/E or P/S is justified by the growth rate using the PEG ratio.

Westport Fuel Systems Inc.

(WPRT) is the more profitable company, earning -7. 2% net margin versus -52. 3% for Clean Energy Fuels Corp. — meaning it keeps -7. 2% of every revenue dollar as bottom-line profit. Operating margin tells a similar story: WPRT leads at -8. 2% versus -35. 0% for CLNE. At the gross margin level — before operating expenses — WPRT leads at 19. 1%, reflecting greater pricing power or product mix advantage. Stronger margins indicate durable pricing power, lower cost of revenue, or higher mix of software/services. They are one of the clearest signs of business quality.

None of the stocks in this comparison currently pay a material dividend.

All are effectively zero-yield and should be held for capital appreciation rather than income.

For long-horizon retirement investors, Westport Fuel Systems Inc.

(WPRT) is the stronger choice — it scores higher on the combination of lower volatility, dividend reliability, and long-term compounding (low volatility (β 0. 88)). Both have compounded well over 10 years (WPRT: -91. 7%, CLNE: -28. 9%), confirming both are viable long-term holds — but the lower-volatility option typically results in less emotional selling during corrections. Retirement portfolios generally favour predictability over maximum returns. Consult a financial advisor before making allocation decisions.

These companies operate in different sectors (WPRT (Consumer Cyclical) and CLNE (Energy)), which means they face different economic cycles, regulatory environments, and macro sensitivities — making direct comparison nuanced.

These fundamental differences mean investors should not choose between them on a single metric — the "better stock" depends entirely on which of these characteristics aligns with your investment strategy.