I recently had a chance to drive i10 automatic. I have i10 manual, so I can easily sense the differences. Here I would like to talk about disadvantages or rather side effects of automatic transmission compared to manual. Note that this is non tiptronic auto.
1. Overtaking is tricky on automatics. Mainly because power delivery is not predictable. You may get used to it, but its still tricky. If you press throttle hard because you want to overtake quickly, transmission shifts to lower gear and hence instead of quick push there is only engine noise. RPM can jump to as high as 6k in such cases and there is no acceleration advantage. This might not be applicable for other auto transmissions but my guess is that situation would be similar.
2. Braking appears non responsive. Mainly because even when accelarator is depressed, engine still delivers some power to wheels. This can only be undone by shifting to Neutral(N) is such cases. But in general braking is inferior than manual one.
3. Car feels lethargic than it is. Manual delivers power when needed hence auto appears lethargic than manual. May be some power is lost in auto transmission, but its mostly because transmission is always at optimal setting, which is not tuned for power. Manual definitely feels more peppier.
4. Automatic has another fluid which needs to be changed after specified interval. This interval quite high like 30000km in case of i10, but still its an extra expenditure.
5. Automatic is very easy to drive at city speeds and also less tiring but do not offer any advantage for highway drives.
Thats it for this post that I can think of...
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