Page 1 of 1
Is it a hybrid?
Posted: Fri May 16, 2025 10:19 am
by Graeme
I have a BMW X5 4.0d 2018 (F15) described by BMW as having Efficiency Dynamics. i understand the car additionally charges one battery when braking or during over-run which is used to power its stop-start technology and the other battery maintains all the electrical systems. It sounds to be the same as what other makers call their cars a mild hybrid! Am I correct?
Is it a hybrid?
Posted: Fri May 16, 2025 10:25 am
by X5Sport
Not really. Non ‘e’ cars (like say an M340i) mostly now have an extra 48V battery that provides a short extra kick when pulling away from lights or needing to overtake. They are described as ‘mild-hybrids’ but can’t run the car any real distance with the engine off.
When I worked on dual-battery vehicles they were just called split load or split charge systems. BMW have used the efficient dynamics moniker on single battery vehicles as well. My X6 has that moniker as it changes the the alternator output up on the overrun.
A full hybrid (As an example, the 330e is a 2.0L petrol engined car) has an extra battery under the boot floor that can drive the car around 30 miles and is a full hybrid.