5-SERIES: A new hatchback version of the 5-series, called the Gran Turismo (GT for short), will be introduced towards the end of 2009, presumably as a 2010 model.
7-SERIES: The V12-powered 760i and long-wheelbase 760Li rejoin the lineup. Under the hood is an all-new 6-liter V12 engine with twin turbochargers and direct fuel injection. Output is 544 horsepower, and peak torque -- all 553 lb-ft of it -- is delivered from 1,500 all the way up to 5,000 RPM. The 760 will play host to BMW's first 8-speed automatic transmission. Expect all the comfort and convenience features in BMW's arsenal, including air suspension, four-zone climate control, night vision and adaptive cruise control that can start and stop as needed in heavy traffic.
X1: BMW's new entry-level crossover SUV, the X1, is scheduled to go on sale in late 2009, most likely as a 2010 model. The X1 will offer rear- or all-wheel-drive. Powertrains have not been announced, but I'm betting on the 3-liter inline six found in the 1- and 3-series.
X3: A larger X3 is known to be in the works, but BMW has not announced a release date; my guess is it will show up sometime during calendar year 2010. Expect the X3 to grow by nearly a foot -- BMW says it will be as large as the first-generation X5 (which itself grew 10 inches longer when it was redesigned in 2007). The new X3 will be built in BMW's plant in Spartanburg, South Carolina, alongside the X5 and X6. (The current X3 is built under contract by Magna-Steyr in Austria.)
X5: The X5 SUV -- sorry, SAV -- gets a new "M" version with a 555 horsepower twin-turbo V8, stiffer suspension, and racy body trim.
X6:Like the X5, the X6 gets a new 555 hp "M" version.
The best time to think about fuel efficiency is before you buy a car. Generaly, smaller cars will use less gas. And since insurance and taxes are also more of a bother in large cars, it may be wise to buy a little car if you care about the money. Also, among the larger cars, some are better than others. All you have to do is relate to the miles per galon figure that comes with it. Sports cars, by the way, are the best way to make more fuel burn away, and automatic transmission is also a good way of wasting a lot of it.But those seem too obvious. The interesting thing is how to make a given car which you already have in your garage, go further on every single litre. As a rule, you can improve fuel efficiency by as much as 25% simply by changing your driving style, provided that your car has a manual gearbox.Here's what you do: Try to change the gears (up) without the engine going to high RPM - certainly not over 2.5k RPM (2500 rounds per minute). I know a lot of people extend first,second and sometimes even third gear more than that because they want to accumulate speed. This may get you to the next traffic light before the car on the other lane, but there's a price to be paid - paid with a currency called petrol.As long as you change the gears early you're pretty much maximizing the fuel efficiency of your motorcar. One last tip: Stay away from traffic and don't crawl (using the cluctch) too much. In other words, driving in the city is wasteful where fuel is concerned. 
Monster Truck