It should be in the log book. Looking in the Haynes manual for the 307 normal cars the engines use belt and recommended changes are at 60000km. The cc model should be the same. Both petrol and diesel are the same. It mentions to look for signs of leakage with belt off from the pump as to the decision to replace it.
I assume petrol as you have not said HDI so it will be the VTI engine which is chain drive with known issues 308 T9 2.0 BlueHDI 180 EAT6 2017, 108 1.0 Active 2014, 208 1.6 e-HDI Feline 2014, DS4 DSport 2.0 HDI 2012, Suzuki RGV 250M 1989 (Money Pit) The 1.6 VTi / THP hit the market in late 2006. Initially, it was fitted to the Mini One (and Cooper) i Peugeot 207, and was later incorporated into most PSA Group models. 1.6 VTi engines have four valves per cylinder and are equipped with the Vanos system (valve timing change control). The THP engine also gets direct fuel injection and a Twin
Peugeot 207 SW 1.6 16v RC 128 kW = Timing chain, check and replace if necessary after 10 years. Peugeot 207 SW 1.6 16v VTi 88 kW = Timing chain, check and replace if necessary after 10 years. Diesel Variants produced between 2006 and 2012. Peugeot 207 SW 1.4 HDi 50 kW = 240 000 Kilometres or after a maximum of 10 years.
The average timing belt (also cambelt) replacement cost for a Peugeot 207 is between £300 – £500 in the UK. The material costs for a new timing belt, tensioner and idler pulley will only be around £100 – £200. What makes the timing belt replacement so expensive is the labour cost, as it is a comparatively complex and time-consuming job.
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