The stock 6a10 v6 engine is definitely much stronger and better performance compared to 4g91 stock engine especially in auto transmission (gearbox 212 vs 222 coding). This is a fact and else those jap enginners wouldnt be allocated hundred thousands fund in engine development. The V6 engine is more sophicated and more parts are required to built. of cos,the maintainace wise will be higher compare to the conventional L4 engine. there is always limit for L4 engine in term of displacement and they are mostly up to 2.4 liters only so far. Else they have either to transform into L6 engine. V series engines will have better balance compare to L-series engines, else the F1 engine will just use L configuration. again, V8 series is evidently the current set-up for F1 engine.
Sometimes, there is no need to argue with those die hard fans of 4g91. Some of them even claimed their engine can even beat the 4g93 with slighly modified engine.What a big sarcatic joke!Huge different in engine displacament and same engine design should be adequate to elucidate the outcome..i use to own a satria with v6 engine. it still running smooth and gives less problem as well. The routine maintainace is just like normal wira, but maybe needs more engine oil (slighly more than 4liters). Now, the car is left for mum to drive. my conclusion is sufficient power and very reliable engine..