Does 4 wheel drive needs more fuel than 2 in Toyota RAV4?
Yes, generally, a Toyota RAV4 with 4-wheel drive (4WD) will use slightly more fuel than a 2-wheel drive (2WD) version. The extra weight of the 4WD system components and the increased drivetrain friction contribute to slightly lower fuel economy. The difference might not be huge, but it's usually measurable.