STORY: Three of Europe's biggest automakers endured a tough start to the year.

Volkswagen posted a 20% drop in first-quarter operating profit as it was hit by lower sales and higher costs.

German rival Mercedes-Benz and Stellantis also posted lower sales and first-quarter revenue on Tuesday.

Weakness in car sales affected mass-market and top-end models alike.

But the automakers promised improvements as the year goes on and new models hit the market.

Luxury carmaker Mercedes-Benz was worst hit in Q1 and reported a 30% drop in earnings.

Stellantis said its revenue fell 12% in the quarter.

Despite that, all three stuck to profit or sales targets for 2024 as their new models debut.

VW believes rising orders in March will have a positive impact on second-quarter results.

Europe's legacy automakers face a number of challenges at home and abroad.

The German firms, in particular Volkswagen, face rising competition in China from local brands.

They are also spending vast sums on new, less-profitable EVs to compete with Tesla.

Meanwhile, Chinese automakers have introduced lower-cost electric models to Europe.

Volkswagen said it still expects 2024 sales revenue to rise up to 5%.

It also plans 30 new models by the end of the year, which should boost sales.

Tuesday's updates hit the automakers' stocks.

Mercedes shares were down 3.6% in early trade, while Stellantis nearly 2% and Volkswagen over 2.5%.