Apply the parking brake. Turn off the air conditioner. Check whether coolant or steam is escaping from the engine compartment. Do not go near the front of the vehicle. Stop the engine. Wait until the steam dissipates, then open the bonnet and start the engine. Open the bonnet and idle the engine until it cools.
The Mazda engineers have clearly been hard at work getting the car's various noisy bits to shut up, and the result is an exceptionally quiet cabin, with hardly any road roar or wind noise, even at high motorway speeds. The 2.2 diesel is also relatively refined, once its low-speed rumbling has warmed away. You should be able to squeeze 45mpg out
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mazda cx 5 2.2 diesel engine problems