Have it checked out by a local shop for things like worn ball joints, idler arms and things like that as well as the standard compression checks. At 148,000 miles any car is going to show signs of wear. If you need the car as reliable as you indicate - invest a little up front and check it out.
Also, you don't say if you get snow but snow tires are highly recommended for any snowy conditions.
1994 E320 Wagon (Died @ 308,669 miles)
1995 E300 Diesel (194,000)
1999 E300 Turbodiesel (244,000 miles, dies at 255,000)
2006 Toyota Tundra SR5 AC 4X4 (115,000 miles)
2011 Audi A4 Avant (129,000 miles) hate this car!
BMW 330 xi 6 speed manual (100,034 miles)