The c5 corvette is quicker but not by a whole bunch the basic z3 starts at 29995 the 28 at 36470 the m roadster from 42770 walkaround although the z3 is basically unchanged for 1998 the aggressive tires and widened rear track that go with the m version lend an even more purposeful look to this cars classic good looks. Porsche boxster vs bmw z3 reliability by model generation show details see stats for powertrain and chassis repairs results are for year ending june 30 2018 only successfully completed repairs are currently included in the analysis routine maintenance most wear items recalls and problems fixed with just a reflash or warning light reset are not included year and model of average . Right car at the right time the boxster entered a growing market matured by the popular mazda miata and enlivened by the james bond promoted bmw z3 and a droptop version of the c5 corvette when . Learn more about the 1998 bmw z3 get 1998 bmw z3 values consumer reviews safety ratings and find cars for sale near you. Ive been looking at a 1998 porsche boxster not the s which has the 25 engine and a 1998 bmw z3 with the 28 engine of course i am leaning toward the boxster but am wondering which vehicle would be faster from 0 to 80 and which is faster in the twisties i am presuming that the boxster is lighter and should be faster in both instances