BMW’s brought out the third generation of the X5. The big SUV – or SAV for Sports ACTIVITY Vehicle in BMW parlance – has been in the company’s lineup for 14 years now and figured strongly in the trend toward sporty all-terrain vehicles. Almost all models come with BMW’s x-drive all-wheel drive as standard equipment. Now BMW has added a rear-wheel drive diesel option. The full-color heads-up display features new data content.