If you really must have a plug-in MPV, the BMW 225xe is the fastest, the best handling, and potentially the most frugal, too. It's also the only plug-in MPV on the market, which brings obvious running cost benefits. In official tests, it means that the 225xe will hit 113mpg and emit just 57g/km of CO2. The latter number grants it exemption from the London Congestion Charge, and brings with it competitive company car tax breaks, too. You're unlikely to ever hit that claimed fuel economy figure, however, unless you exclusively cover very short journeys and keep the car topped up with electricity either at home or at your destination. The system itself works very smoothly. It's very relaxing to drive, and can perform silently in EV mode for up to 28 miles. By plug-in hybrid standards, performance in electric mode is excellent, too. There's easily enough shove to keep pace in regular traffic, and if you need a more power, the petrol engine kicks in. By any margin, this is a quick car: the 0-62mph sprint takes less than seven seconds making this the quickest new MPV on the market