Nissan Problems

I would say that you are in a position of power here, as they want to tear up the deal by asking for another $1880. If I were in your shoes I would refuse their request and demand they proceed with the deal as negotiated. If they refuse walk away and go somewhere else. If they were half smart they would cop the mistake and sell you the car as agreed.

Ask them, why, if it's normal that they want you to take it back every 1000km. That's not normal. It's clearly using oil and they are clearly checking it to see how much it is using. Quiz them about the reasons for the check, and what they plan to do about fixing the car.

It should definitely be replaced. Nissan spokesman Peter Fadeyev says: "This matter can be checked and, if needed, rectified by a trained technician at any authorised Nissan dealer."

The Australian Design Rule specifies that the speedo must not indicate a speed less than the true speed of the vehicle, or a speed greater than the vehicle’s true speed by an amount more than 10 percent plus 4 km/h. That means that if your car is travelling at a true speed of 100 km/h the speedo can legally read as high as 114 km/h. On that basis your car would appear to be within the allowed tolerance and is legal.

Take it back to where you bought it and see if they will help you with the repairs. It would be much easier if you bought it from a Nissan dealer, that way you could seek goodwill assistance. If you didn't it gets messy. You're not alone; the Murano does have diff problems. If you want to pursue Nissan you should contact the Nissan Customer Service Centre on 1800 035 035.

Worn injectors are a possibility. I would take it to a diesel mechanic and have it checked.

The batteries fitted to all cars today are borderline in capacity; the motoring clubs do a great business in selling batteries through their roadside assistance services. I would go to a reputable specialist battery retailer and buy a good brand of battery and not a generic brand.

Provided the service is done "by the book" and with manufacturer-standard parts, there will be no effect on your warranty.

The 4.8-litre six-cylinder petrol engine was last used in the GU 7 in 2012.

It's impossible to diagnose the noise without actually hearing it first hand; the dealer is best placed to sort it out for you. The shudder is something I would be concerned about; it's in the range of city driving and would be annoying. Also, you have to be concerned about it getting worse over time and kays travelled. Certainly press the dealer, and Nisan, to sort it out.