The rating plate and manual should confirm but...
Our P3 XC70 is 2100kg, depending on configuration yours should be between 1800 and 2100kg.
I wouldn't think twice about towing 1500kg, most caravans are at least that heavy these days. It really depends on the trailer for how close to the limit you would be.
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2005 XC90 D5
2009 XC70 D5
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