&gt; Gas tank, fuel lines, transmission, engine, drive shaft, spark plugs &#x2F; distributor cap, muffler, exhaust system, fuel pump, engine, air intake, turbo&#x2F;super chargers if necessary, oil pumps &#x2F; reservoirs, etc. -- many hundreds of parts can be shaved off of full electric cars.<p>Battery software, Battery management, Battery coolant. Electric Drivetrain.<p>The Drivetrain in particular seems to be rather complicated. Consider that Edmunds was forced to replace their Drivetrain FOUR times in two years: <a href="http:&#x2F;&#x2F;www.edmunds.com&#x2F;tesla&#x2F;model-s&#x2F;2013&#x2F;long-term-road-test&#x2F;2013-tesla-model-s-drive-unit-iv-the-milling.html" rel="nofollow">http:&#x2F;&#x2F;www.edmunds.com&#x2F;tesla&#x2F;model-s&#x2F;2013&#x2F;long-term-road-tes...</a><p>Note that modern engines have a lot of parts because we KNOW which parts wear out over time. Spark Plugs for example wear out, and its very simple to replace spark plugs to recondition an ICE engine.<p>What wears out in an electric vehicle? Do the permanent magnets in the induction motor require replacement in 10 years? Nobody knows! Probably not, but there&#x27;s probably something in there that needs replacement (due to rust or whatnot).<p>Eventually, electric motors will grow to have more parts. Not because they NEED more parts, but because we will learn what parts SHOULD have replacing.<p>Replacing a $4000 drivetrain whenever &quot;something&quot; is wrong? That&#x27;s a problem. Replacing the $1000 permanent magnet in the induction motor? Well, that will be a better problem, but will require long-term testing before Tesla is able to discover (let alone solve) those problems.<p>Consider this: Hard Drives have more moving parts than Solid State Drives, as do Tape Drives. Yet we place more trust in them than SSDs because we really don&#x27;t know the failure modes of SSDs.