The BMW 5 SERIES (2003-07) 523I 5DR TOURING 2.5 SE AUTO is a premium five-door estate from the larger family-car class. It pairs useful luggage space with a comfortable cabin and automatic petrol driving, offering a more refined alternative to mainstream family estates and a practical choice for longer journeys. mycarcheck.com records 59 look-ups covering 23 distinct VINs, a useful snapshot of interest in this older BMW. Across those checks, the average private-sale valuation was £1,600, average recorded mileage 136,000, and cars averaged just over five previous keepers. These figures are guideposts, not a price or condition guarantee; check each car’s history, service records and current state carefully. With its six-cylinder character, the 523i Touring suits families, commuters and drivers wanting space without giving up an enjoyable drive. It competes with Audi A6 and Mercedes-Benz E-Class estates, standing out for its premium feel; expect age-related upkeep and modest fuel economy.