Im going to disagree with the above post. Diesel engine are much stronger and more reliable engines. Ok they cost more to fix, but they will let you down a lot less often. As for the price of fuel, there is a few pence difference with the 2 fuels, but drive them both the same and you will get an extra 10mpg from the diesel, at least. As for glow plugs, changing/replacing them days have gone, they should last the lifetime of the car as they don't even come into effect until temperature is below 0c Plus, due to the turbos on diesels, and other factors, a 3l petrol will be a lot less BHP and Torque then the 3l Diesel. More power + better reliability + more MPG = winner in my opinion. Spend the extra 1k or so, you won't be disappointed, or even test drive both versions and I'll bet you a pint you will prefer the diesel?