BMW stands for Bayerische Motoren Werke — German for Bavarian Motor Works. The company has carried that name since 1917, and it is still the legal name today: the corporation is registered as Bayerische Motoren Werke Aktiengesellschaft, or BMW AG.
That is the short answer. The longer one is more interesting, because the name arrived before the company we now call BMW actually existed, and because the most repeated story about the badge — that it shows a spinning propeller — is a piece of advertising from the 1920s rather than a fact about the design.
What each letter means
| Letter | German | English |
|---|---|---|
| B | Bayerische | Bavarian |
| M | Motoren | Motor, or engine |
| W | Werke | Works, in the sense of a factory |
Bavaria is the German state whose capital is Munich, where BMW still has its headquarters and its oldest plant. So the name is not a slogan or an invention — it is a plain description of what the business was in 1917: an engine factory in Bavaria.
That literal quality is easy to miss because the abbreviation has become a brand in its own right. Mercedes-Benz is named after a person and a founder. Audi is a Latin pun. BMW is an address and a trade.
How to pronounce it
In the United States, nobody says the full German name. BMW is pronounced letter by letter: bee-em-double-you. That is what BMW of North America uses in its own advertising, and it is what you will hear at any dealership.
In German the full name is spoken as BAY-er-ish-uh Mo-TOR-en VER-kuh, and the letters themselves are pronounced bay-em-vay, because W is pronounced as a V in German. Both are correct. Neither is worth arguing about.
Where the name came from
The name did not start with a car company. It started with two separate aircraft businesses in Munich during the First World War.
Bayerische Flugzeugwerke AG — Bavarian Aircraft Works — was established on 6 March 1916. Separately, an engine manufacturer called Rapp Motorenwerke was renamed one year later, in 1917, becoming Bayerische Motoren Werke. That renaming is the moment the three letters came into existence.
Rapp Motorenwerke had been building aircraft engines that, by most accounts of the period, were not very good. The renaming came with new management and a new engine designer, Max Friz, whose high-altitude aircraft engine became the company’s first real success. The letters BMW therefore began life attached to an engine, not a vehicle — the first BMW motorcycle came in 1923 and the first car in 1928.
The two companies came together afterwards. In 1922 the financier Camillo Castiglioni acquired the engine production, the workforce, the facilities, the company name and the blue-and-white logo of Bayerische Motoren Werke and transferred all of it to Bayerische Flugzeugwerke. BMW’s own historians put it plainly: from that point on, the founding of BFW has been recorded as the birthday of Bayerische Motoren Werke.
This is why the company celebrates 1916 as its founding year even though the BMW name is from 1917. The name and the corporate body have different birthdays, and BMW counts the older one.
One detail worth flagging: BMW’s own materials are not perfectly consistent about the day. The BMW Group press archive gives 6 March 1916 for the establishment of Bayerische Flugzeugwerke, while other BMW Group pages give 7 March. The year is not in question; the exact day is recorded differently in different official sources.
The propeller is a myth, and BMW says so
Almost every article about BMW repeats that the badge shows a white propeller spinning against a blue sky, a nod to the company’s aircraft engines. It is a good story. It is not where the design came from.
The blue and white quarters are the colours of the Bavarian state flag. The logo was entered in the trademark registry of the imperial patent office on 30 September 1917, and it has carried those colours ever since.
The propeller came later. According to BMW Group’s own account, the logo was first portrayed as a stylised rotating propeller in advertising material of the late 1920s — roughly a decade after the badge was registered. The company created the association itself, to sell aircraft engines, and the interpretation stuck so well that it is now repeated as the original meaning.
So both statements are true, and the order matters: the roundel is the Bavarian flag, and BMW later marketed it as a propeller.
What BMW is called today
The legal entity is Bayerische Motoren Werke Aktiengesellschaft — Aktiengesellschaft being the German term for a public limited company, abbreviated AG. In everyday use you will see three different things:
- BMW AG — the company itself.
- BMW Group — the parent organisation, which also owns MINI and Rolls-Royce Motor Cars and runs BMW Motorrad.
- BMW of North America — the US importer, which is the entity named in the fine print of every American brochure and specification sheet.
You can check that last one yourself. Open any US-market brochure in our archive and read the small print on the final page: it names BMW of North America, LLC, of Woodcliff Lake, New Jersey. The German parent builds the car; the American subsidiary is who sells it to you and who publishes the numbers you see quoted in US road tests.
If you have ever read the last page of a US-market BMW brochure, that final line — “BMW of North America, LLC” — is the reason American specification tables use horsepower, pound-feet and miles per gallon while European ones use kilowatts, newton-metres and litres per 100 kilometres. Same company, different market, different paperwork.
The name on the car is a different system
Worth separating from the company name: the badge on the trunk lid follows its own logic. A 330i is a 3 Series with a particular engine output rating; an X5 xDrive40i is an X model with all-wheel drive. The internal factory codes — E30, F30, G20 — are a third system again, used by engineers and by anyone shopping for parts. We cover those in BMW chassis codes explained.
If you want to know exactly which of these applies to a specific car, the vehicle identification number carries the answer. Our BMW VIN decoder reads the plant, model and model year straight out of the number.
Common questions
Does BMW stand for “Break My Window” or “Bavarian Motor Works”?
Bavarian Motor Works is the correct English translation of Bayerische Motoren Werke. The joke expansions are just jokes.
Is BMW a German company?
Yes. BMW AG is headquartered in Munich, Germany, and Bavaria is a German state. BMW does build vehicles outside Germany — the plant in Spartanburg, South Carolina, builds the X models for the US and for export — but the company itself is German. We go through this in detail in Is BMW German?
When was BMW founded?
BMW dates its founding to 1916, from the establishment of Bayerische Flugzeugwerke. The BMW name itself appeared in 1917, when Rapp Motorenwerke was renamed. The full account is in When was BMW founded?
Does the BMW logo show a propeller?
No. The blue and white are the colours of the Bavarian flag. The propeller reading comes from BMW’s own advertising in the late 1920s, years after the logo was registered. The full logo history covers every version since 1917.
What does the M in BMW M stand for?
Motorsport. BMW M GmbH began as BMW Motorsport GmbH, and the M badge on an M3 or M5 is a different M from the one in the company name — that one is Motoren, engines.
Sources
- BMW Group PressClub — The BMW Group: a story of mobility: founding of Bayerische Flugzeugwerke on 6 March 1916, the 1922 transfer, and BFW’s founding recorded as BMW’s birthday.
- BMW Group — History: the renaming of Rapp Motorenwerke in 1917, the blue-and-white logo in the Bavarian colours, the trademark registry entry of 30 September 1917, and the propeller interpretation introduced in advertising of the late 1920s.