TEHRAN — The Islamic Republic announced a ban Thursday on imports of 75 so-called luxury products, ranging from high-end cars to coffee to toilet paper, part of efforts to promote domestic products and stem the outflow of dollars and other foreign currency as Western economic pressures increasingly choke off Iran’s commerce and critical oil revenue.
It is the most sweeping measure so far to batten down the Iranian economy, although the move is not likely to leave showrooms and store shelves empty.
It allows for foreign parts to be shipped in for local assembly plants, which make cars such as Peugeots, European-brand home appliances, laptops, and mobile phones — all covered by the new ban.
There also are many Iranian-made alternatives to the list of now-blocked toiletries and beauty products — toothpaste, soap, shampoo, cosmetics, even toilet paper — but many consumers strongly prefer often better-quality imports from Europe, Turkey, and the Middle East.
‘‘It seems the government is desperate to control the flow of money outside the country,’’ said Mehrzad Boroujerdi, a Syracuse University professor who follows Iranian affairs. ‘‘If you want a clear signal about how the sanctions are hitting Iran, this is a good one.’’
Western sanctions have cut sharply into Iran’s oil sales, which account for 80 percent of the country’s foreign currency revenue. At the same time, Iran has been barred from the major international banking systems, which has helped push the Iranian currency to record lows and forced merchants to resort to hand-carrying gold and cash from the nearby commercial hubs of Istanbul and Dubai.
Last week, in an attempt to control the rush of capital out of its borders, Iran prohibited exports of gold without a license issued by the country’s central bank.
Iranian officials have floated proposals to roll back some of the country’s uranium enrichment — the centerpiece of the battle over Tehran’s nuclear program — if the United States and its European allies remove some sanctions. Western leaders have given no clear response about the possibility of resuming nuclear talks with such proposals on the table.
President Obama has strongly favored a combination of sanctions and diplomacy to try to wrest concessions from Iran. In Paris last week, President Francois Hollande said France would favor as many sanctions as necessary to rein in Iran’s nuclear ambitions, which the West and allies fear could lead to atomic weapons. Iran says it seeks reactors only for energy and medical research.
It is unlikely that squeezing consumer choices will be enough to touch off major street protests, which would certainly be met by swift crackdowns. But the steps could directly affect Tehran’s main bazaar, which acts as a clearing house for many imported products.