
das Baujahr
year built
The year in which a building, vehicle, or technical device was manufactured.
Mein Auto ist Baujahr 2018 und hat erst wenige Kilometer.
My car is model year 2018 and has only a few kilometers on it.
year built / model year
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year built
The year in which a building, vehicle, or technical device was manufactured.
Mein Auto ist Baujahr 2018 und hat erst wenige Kilometer.
My car is model year 2018 and has only a few kilometers on it.
The word is made up of 'Bau' (from 'bauen', to build) and 'Jahr' (year). So it literally means the 'year of building' or the year of manufacture.
Das Haus, Baujahr 1920, wurde komplett saniert.
The house, built in 1920, was completely renovated.
'Baujahr' (year built/model year) is often used directly after the noun without a verb or preposition in order to specify something. In advertisements or technical data, it is often abbreviated as 'Bj.'.
Ich verkaufe mein Fahrrad, Baujahr 2021.
I am selling my bicycle, model year 2021.
The word is typically used for buildings, vehicles, and technical devices. Common combinations are 'Baujahr des Hauses' (year the house was built), 'Baujahr des Autos' (model year of the car), or 'Baujahr der Maschine' (year the machine was built).
Können Sie mir das Baujahr dieses Geräts sagen?
Can you tell me the year this device was manufactured?
vintage / cohort
When referring to a vehicle, Jahrgang can colloquially sound like a year designation. In the meanings given here, however, Jahrgang refers to a group of people, a wine vintage, magazines, or a training cohort, while Baujahr gives the year of manufacture. For vehicles and technical devices, Baujahr is therefore the appropriate term.

Das Baujahr des gebrauchten Autos steht in den Fahrzeugpapieren.
The year the used car was built is listed in the vehicle documents.
Der Jahrgang 1985 traf sich nach vielen Jahren wieder.
The 1985 cohort got together again after many years.