(Reuters) -U.S. President Donald Trump on Friday once again threatened to ramp up his trade war, recommending a 50% tariff on European Union goods starting June 1, sending European stocks tumbling.

The United States was the trading bloc's biggest export partner in 2024, making up 20.6% of exports, according to Eurostat.

Medicinal and pharmaceutical products were the EU's most exported group to the U.S in 2024, followed by motor vehicles and aircrafts and associated equipment, according to the data.

The three largest exporters to the United States in the EU were Germany, which exported 161 billion euros ($182.62 billion) worth of goods, Ireland, at 72 billion euros, and Italy, at 65 billion euros.

Below is an overview of the biggest EU exports to the U.S. by sector:

MEDICATION AND PHARMACEUTICALS

The EU exported around 120 billion euros worth of pharmaceutical products and medicaments to the U.S in 2024, according to Eurostat data.

Although the Trump Administration initially spared pharmaceutical products from reciprocal tariffs on "Liberation Day", it was not immediately clear if the industry would continue to be shielded from them after Trump's statement on Friday.

Some of the EU's top pharmaceutical companies are

- Novo Nordisk

- Bayer

- Roche

- Novartis

AUTOMAKERS

The U.S. was the second largest market for EU car exports accounting for 22% of EU vehicle exports in 2024 in terms of value, according to figures from auto industry group ACEA.

Automakers including Mercedes-Benz, Stellantis ( STLA ) and Volvo Cars have pulled their 2025 financial guidance, citing the uncertainty caused by U.S. trade policy.

German Volkswagen Group is highly exposed to the tariffs, as its premium brand Audi does not manufacture in the U.S., though it has said it plans to announce a location to build some of its top-selling models in the market this year.

AIRCRAFT AND AIRCRAFT EQUIPMENT

Toulouse-based Airbus is France's second-biggest exporter and delivers some 12% of its jets to the United States, some of which are assembled locally, according to Cirium data.

Among the biggest supplier to Airbus and Boeing ( BA ) is CFM International, the world's largest engine maker by volume, co-owned by France's Safran, and GE Aerospace.

ENGINES, MOTORS AND MOTOR VEHICLE PARTS

Alongside cars and planes, the European Union also delivers a lot of car parts and engines into the U.S. Companies potentially affected by tariffs could include MTU Aero Engines, which besides manufacturing military aircraft engines also repairs and maintains commercial engines.

Some European companies manufacturing car parts including engines and motors:

- Steyr Motors ( STYRF )

- MTU Aero Engines

- DEUTZ

ALCOHOL

Of the around 9 billion euros worth of alcoholic beverages that the EU supplies to the U.S., European spirits made up 2.9 billion euros in 2024, according to trade group spiritsEurope.

U.S. spirits companies are also invested in Europe and throughout the sector's supply chain, so hurting them puts jobs at risk, SpiritsEurope had told Reuters in March.

Some of the biggest European alcohol producers include:

- Dutch brewer Heineken

- British spirits maker Diageo ( DEO ), owner of many European brands

- Beer maker Carlsberg

COSMETICS

Exports of perfumes, essential oils, cosmetics, and toiletries to the United States was made up of $10.47 billion in 2024, according to the United Nations Comtrade database. Of this, French cosmetics exports to the U.S., from the likes of L'Oreal, make up about 2.5 billion euros per year.

LUXURY

The sector's largest groups sell roughly a quarter of their products to U.S. consumers, while exposure among smaller brands varies, from 14% at outerwear company Moncler to 46% at sandals-maker Birkenstock ( BIRK ).

France's luxury industry - the world's largest - employs over 600,000 people, data from the economy ministry shows.

The two countries are the largest exporters of most luxury products to the United States.

S&P analysts cited the luxury sector in a recent note as one of those most exposed to U.S. tariffs, as companies have only limited ability to move production to the United States.

($1 = 0.8816 euros)

(Compiled by Javi West Larrañaga and Marleen Kaesebier in Gdansk; additional reporting by Simon Ferdinand Eibach; Editing by Nick Zieminski)