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Executive Cars
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Diesel Executive Cars
First place
Mercedes-Benz E300 Hybrid 65.7 mpg
The Mercedes-Benz E300 Hybrid has an official combined economy figure of 65.7mpg, which is highly impressive for such a large and refined executive car.
Second place
BMW 5 Series 520d ED 62.8 mpg
The 520d ED achieves excellent fuel economy that shames many city cars. With a brilliant blend of quality, style, performance and driving entertainment, it remains our favourite.
Third place
Audi A6 2.0 TDI SE 57.7 mpg
The A6 uses an arsenal of technology to achieve its impressive fuel economy, which is slightly better than the previous A6 2.0 TDIe overall, but the performance of the new car is much better.
Mercedes-Benz E-Class E220/E250 CDI 57.7 mpg
The E-Class has a BlueEFFICIENCY pack which means low rolling resistance tyres, energy-saving alternator, fuel pump, air conditioning and power steering.
Petrol Executive Cars
First place
Lexus GS 450h 46.3 mpg
The Lexus GS 450h may have an impressive official economy figure of 46.3mpg, but it also delivers serious amounts of refinement and performance
Second place
BMW ActiveHybrid5 44.1 mpg
Despite the high expectations the ActiveHybrid5 doesn't disappoint. If fuel consumption is your top priority then the 520i will save you thousands of pounds and match the hybrid.

BMW 5 Series 520i SE 44.1 mpg
The 5 Series has always been the most engaging executive saloon to drive and the latest version maintains top spot. The 520i automatic blends good performance with strong fuel economy and poise making it the ideal choice for enthusiastic drivers.
Third place
Mercedes-Benz E200 43.5 mpg
At the heart of the E200 is a 1.8-litre, four-cylinder petrol engine which combines variable intake and exhaust camshafts, direct injection and turbocharging to great effect. The result is more than 100 bhp / litre and 228 lb.ft of torque over an exceptionally wide band from 2,000 to 4,300 rpm.
Also consider
Audi A8 Hybrid 2.0 TFSI Tiptronic 44.8 mpg
The Audi A8 Hybrid sits in the next segment up from these cars in the Executive Class, and so it's more expensive than the other contenders above, however it's equally efficient, which is an impressive achievement.



