Jim, Dave's right. The 1.6HDi 16V has 110 bhp and 177 ft.lb of torque whereas the 2.0HDi only 90 bhp and 151 ft.lb. On paper at least, the 1.6 doesn't sound a bad bet, especially as max. torque is achieved at a lower rpm, i.e. it has a flatter torque curve which is always beneficial, especially when towing.