Some Volvo V70 owners report experiencing a clunking noise during the first shift or when shifting into drive or reverse, which may indicate underlying transmission issues. This clunking sound can stem from problems with the transmission fluid or sensors, leading to abnormal noises during gear shifts. Additionally, some owners find that loose engine mounts or worn gears contribute to the noise, while improperly torqued axle bolts may also play a role. It is crucial for owners to diagnose the issue promptly, paying close attention to when the noise occurs and checking the transmission fluid level and condition. If the clunking persists or worsens, it is advisable to seek assistance from a professional mechanic or a Volvo dealer for a thorough inspection and necessary repairs.