Also 530i is the lightest G30 5-Series in terms of curb weight: 3713 pounds. The 530e is about 400 pounds heavier and weights even more than the 540i. The M550i tips the scales at 4700 pounds but then again you have a V8 in front.
Let me give you another inconvenient truth about the 530i: it has the best handling characteristics vs 530e, 540i and M550i because of its curb weight advantage. It feels more nimble and more eager to enter curves than its heavier brothers.
And like I said before, power delivery is excellent in the 530i. Sure you get more straight line acceleration in a 540i and M550i but handling suffers as result of added weight.
Even Edmunds.com agrees, calling the 530i the driver's choice in the range.
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2017 BMW 530i, Sport Line,Alpine White, Canberra Beige Sensatec, 19 inch V-Spoke wheels, basic plain Jane build with no options whatsoever..... "Less is more".
Before: 2011 BMW 328i E90 sedan, Platinum Bronze Metallic, Dakota Brown leather, 17 inch wheels, 6-speed auto, N52 6 Cyl inline N/A goodness....