Bhai there are many companies in world using engine frm different manufacturers....the most famous being McLaren F1 having Bmw engine....then the Delorean had peugot engine.....the recently launched supra has bmw engine.....Great Wall motors china is using Mitsubishi 4G series engines....etc
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There might be slight difference i guess coz in one the vdos of brawo doing top speed, it cud reach 120kph only, while mehru does 140