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The mkiv Supra Owners Club

Why Are Auto Gear Ratios Different?


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I'm guessing - Because they're so hidiously complicated inside and it's very expensive to make with more gears? It's only fairly recently that BMW etc have had the cool proper sequential manual gearboxes - I bet they cost a fortune.

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not to mention that the Auto gearbox design is over 10 yrs old....technology has moved on since.....

10 years try 15-20 years, i tried a flappy paddle gear box in a saab turbo hired when i was away with work, it was laughable the ecu would wait about 10 seconds while it took in the scenery THEN change up with the engine bouncing of the rev limiter, i was glad to get back in the no nonsense 3 speed supe

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I'm guessing - Because they're so hidiously complicated inside and it's very expensive to make with more gears? It's only fairly recently that BMW etc have had the cool proper sequential manual gearboxes - I bet they cost a fortune.

 

Plus the SMG's lunch themselves with frightening regularity - I knew a chap who went through three of them on his M3...

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I know that! lol! I meant why do they have less gears too?

 

Mainly because the slippage in the torque converter enables the engine to be in a more efficent part of the toque curve than a locked up system, (clutch/manual 'box) therefore negating the need for more gears (except in extreme high performance applications)

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