1: too much anime.
2: not enough time facing SnS or other electricity damage.
Take the original poster's machine: 10 body 6 armor.
SnS from an automatic weapon fired Narrow Full Burst, assuming 15 dice for the attack (skill + attribs + mods) for 5 nominal hits. I think he's intending the Response to be 6 so we'll go with that for 2 nominal defense hits.
We get 3 (5-2 nominal) hits on the roll. Add 6 for the ammo. Vehicles don't get stunned so we can ignore that whole section, and get 5+6+9 (narrow full burst) for 17 attacks. The vehicle has to roll body + armor or 16 dice to beat the threshold of 20. Obviously not going to happen, so the vehicle shuts down for 17 combat turns.
If the OP adds 6 non-conductivity, he gets 22 dice to beat the threshold of 17. The nominal requirement to beat a target of 17 is 42.
Oh, you don't think the +9 for NFB should be added? OK, the target is now 8. He still needs 24 dice nominal. (Actually, I'd change to wide full or long burst, neutralizing the attacker's defense. Target is 10.)