A Volvo mechanic would be able to tell but judging by the amount of dirt and color, it maybe well worn too. To be really safe, good suggestion is to replace it with the tensioner. I have mine replaced recently when it is about 12,500 miles shy of the recommended mileage interval but it is very close to the recommended years. Even though no cracking or fraying, it is safer to just replaced the whole lot. Peace of mind motoring.
2002 V70XC - Polarartic/Oak, ESR, 5AT Geartronic, leather package, factory towing kit, tinted windows and screens, tracker, sunglass holder, center console cup holder, nylon cargo barrier, luggage net, Ipod connectivity, R instrument gauges 150k kms to date