Auto lamp test: As testers at Karlsruhe University's Lighting Technology Institute have shown, a shocking number of no-name products are substandard. The press has also taken up the issue of inferior headlight lamps. Below are some links to articles on the subject (available in German only):

• 26 April 2008: Automagazin, SAT.1, „Leuchten-Ärger“
• 4 October 2008: Berliner Kurier, „Pfusch bei Scheinwerfern“
• 8 October 2008: Münchner Merkur, „Gefährliche Billiglampen“
• 15 October 2008: Hamburger Abendblatt, „Gefährliche Billiglampen“
• 18 October 2008: Kieler Nachrichten, „Scheinwerfer in Werkstatt einstellen lassen“
• 18 October 2008: Nordwest-Zeitung, „Ersatzlampen nur mangelhaft“