Our neighbours are moving abroad and are offering us their 2004 Porsche Cayenne Turbo S (4.5-litre V8) with 104,000 miles plus their 1997 Mercedes-Benz SLK 230 Kompressor with 78,000 miles for £8000 (for both). Both drive well and, we are assured, are in good condition and have been well looked after. The two cars would fit our requirements of runabout and long distance load carrier quite well, replacing our 52,000 miles 2005 Mercedes-Benz CLK 200 Kompressor. Is this a not-to-be-missed bargain or are we possibly storing up much trouble?