The Munich-based Ifo economic institute said its business climate index, based on a monthly survey of some 7,000 firms, rose to 117.6 in January from 117.2 in December.
The January reading beat expectations in a Reuters consensus forecast of analysts who had forecast a dip to 117.1."The German economy made a dynamic start to the year," Ifo chief Clemens Fuest said in a statement. (Writing by Paul Carrel and Michael Nienaber)