{Combustion engines are steadily increasing in technology too, due to emissions laws.}<p>100.<p>If you ask me, it has reached the point of diminishing returns too (with respect to gains achieved vs added complexity).<p>Take direct injection for example. It provides marginal gains in efficiency, but with that comes a ton of added complexity and side effects.<p>Now you have to get your intake vales cleaned every 60k because there&#x27;s no fuel spraying on them like with a normal port injection system.<p>Now you have a high pressure fuel pump that is a common failure point on many cars. In fact, I&#x27;m surprised they even last as long as they do considering the pressures they run at (I think like 3000 psi under heavy load). Just look at the BMW N54 as an example...<p>Also, the injectors are much more money to replace because of the pressures that they have to deal with (and they are known to go bad more frequently than port injectors).<p>There are a bunch of other complicated things manufacturers are doing as well. BMW Valvetronic essentially uses the lift of the intake cam as a way of throttling the engine. I&#x27;m not sure on the reasoning, but it&#x27;s probably an efficiency thing. However, this is also another failure point.<p>Electric cars are much simpler mechanically. Sure, they may have more software and electronic complexity, but in reality, those types of failures are easier to deal with.<p>Sure, a failure of some expensive piece of electronic equipment will be expensive, but I feel that those failures will be way less frequent and probably limited to manufacturing issues.<p>Now, software on the other hand...