The 23-year-old car is valued at about $US1900 ($A2260).

Since the former leftist guerilla leader has no bank accounts or other assets and put his small flower farm in his wife's name, the car is all he owns, according to his sworn declaration, which appeared in Thursday's official bulletin.

Mujica's only reported income is his presidential salary, about $US11,000 ($A13,100) a month. He gives 20 per cent of this to his political movement.

At 75 years old, Mujica is used to an austere lifestyle.

Not so his vice-president, Danilo Astori, whose declared wealth of $US250,000 ($A297,000) includes a house and car worth nearly 10 times Mujica's Beetle.