What are you going to use the car for? DD use? All year or just summers? The M42 would get better mileage but it's possible to get 30mpg with an M20B25 also.
Also, the early Euro 316i/318i was the lightest E30 chassis ;)
Also, the early Euro 316i/318i was the lightest E30 chassis ;)


The most I've ever gotten is like 26 on the highway only
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