Bamberg / Berlin (dpa) - According to Volvo diesel cars of the brand Daimler can be retrofitted with too high pollutant levels in Germany.

The Kraftfahrt-Bundesamt (KBA) published on Tuesday on its website the operating permit for systems of the Bamberg technology provider Dr Pley. The company had announced that in August also permits for vehicles from BMW are to be expected.

Just over two weeks ago, Dr Pley's retrofit system had its first approval for various Volvo models. The aim is that retrofitted vehicles of the Euro 5 emission standard can be exempted from driving bans. The retrofits to the engine are part of a government policy package for better air. According to the specifications of the KBA, the retrofitted cars may still emit 270 milligrams of nitric oxide per kilometer in real operation in order to be spared from driving bans.

Dr Pley now has the approvals for cars with a Daimler diesel engine, which was installed in several models from the years 2008 to 2017. Specifically, it applies to the C-Class (C220 / 250cdi), the E-Class (E220 / 250cdi), the GLK 220 cdi and the V-Class with the designation 220 cdi. The system developed by Dr Pley is produced and distributed by Bosal Retrofit Gmbh.

German manufacturers had agreed after a long debate on subsidies for hardware upgrades. They favor software to improve exhaust emissions. Daimler is adding 3000 euros in the so-called priority regions and has set up an extra website where car owners can check whether they can receive the subsidy. A nationwide driving ban for Euro-5 diesel is so far in any German city.