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Originally Posted by Big Dave
One wonders when we will see DI gas engines in the US.
Will they be reliable?
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We've had Mitsubishi GDi engines for a while but they were designed for the super clean fuel available in the Japanese home market, so some had carbon issues over relatively small miles - some people relearning the art of carbon removal :
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Originally Posted by Honest John
GDI system of 1.8s prone to failure at around 60,000 miles due to carbon build up if cars are run on 95Ron petrol rather than the 97 - 99 Ron Super the engine is designed for. Same goes for Volvo S40/V40s with same engine.
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I have seen evidence of Petrol engines getting better but nothing which is close to matching Diesel for overall efficiency, and I haven't see any evidence of Diesels being restricted in terms of torque/hp and efficiency.
In 2000 state of the art in Europe was 90hp / 150 lb/ft 45mpg, 100mph. Now its 160hp / 290 lb/ft, 55 mpg and 142 mph - both from 2 litres, Peugeot and BMW.