Top 10 Biggest Gas Guzzlers

To counter our list of most fuel-efficient cars, here’s a look at the other end of the spectrum: the biggest gas guzzlers.

When a vehicle consumes excess amounts of fuel, it’s usually because it has a large engine or is extremely heavy. Some vehicles are both, making them particularly thirsty. This list highlights the most inefficient gas guzzlers on sale right now, according to Natural Resources Canada (NRCan). 

10. Chevrolet Corvette ZR1: 16.9 L/100 km 

At 10th place on the list of thirstiest cars is the Corvette ZR1. It's almost an expectation that a 1,000-hp twin-turbo V8 supercar will drink a lot of fuel, and the Corvette rises right up to the task. It has a fuel economy rating of 16.9 L/100 km, which is not terrible, considering the car’s performance.

9. BMW XM: 17.2 L/100 km 

A car as big as the BMW XM is certainly a heavy drinker. Even though it's a plug-in hybrid (PHEV), don’t expect the XM to be economical. It can only go about 45 km on electric power, but once the battery is depleted, it's a 2.7-tonne, 644-hp V8 tank. It shouldn’t be a surprise that it guzzles fuel at a rate of 17.2 L/100 km, but if you keep the battery charged, the SUV is much more efficient.

8. Dodge Durango Hellcat: 17.4 L/100 km 

While the Dodge Durango Hellcat may be relatively light for such a massive SUV, its fuel consumption is anything but small. Its huge supercharged 6.2L V8 makes a healthy 710 hp that will definitely help empty your fuel tank. The result is a combined fuel intake of 17.4 L/100 km. 

7. Ferrari Daytona SP3: 17.6 L/100 km 

The first V12 car on this list is an extremely special one. The limited production Ferrari Daytona SP3 uses a 6.5L naturally aspirated V12 engine to produce an astounding 828 hp. The SP3 manages to rev up to an insane redline of 9,500 rpm. Cool as that may be, the unfortunate fuel consumption that results from this much performance is a combined 17.6 L/100 km.  

6. Cadillac Escalade V: 17.7 L/100 km 

Unsurprisingly, putting a massive performance engine in an already massive truck-based SUV doesn’t result in frugal fuel economy. The Escalade V uses a 6.2L supercharged V8 that churns out a hefty 682 hp, and the SUV weighs over 2.5 tonnes. The result is that the Escalade V drains its fuel tank at a rate of 17.7 L/100 km. 

5. Ferrari Purosangue: 19.0 L/100 km 

If you take the SP3’s V12 engine and put it into a large SUV, the result is both exciting and highly inefficient. The 715-hp 6.5L V12 in a two-tonne vehicle makes a high-performance but thirsty super SUV. The Purosangue has an astonishing fuel intake rating of 19.0 L/100 km.

4. Ford Mustang GTD: 19.2 L/100 km 

It's surprising that a Ford Mustang has such bad fuel consumption. Yes, it's known to have a big engine, but the Mustang is nowhere near as big or heavy as some other cars on this list. The Mustang GTD is Ford’s track-focused monster. Its 5.2L supercharged V8 is tuned to produce 815 hp, making it the most powerful Mustang ever. It drinks 19.2 L/100 km, sparing no expense on fuel for the sake of performance.  

3. Ford Raptor R: 19.7 L/100 km 

As the trend goes in this list, a sports car with a big engine drinks a lot, but an SUV with the same engine gulps even more. That's exactly what happened with the Ford Raptor R, which uses the massive engine from the Mustang GTD. In the Raptor R, the supercharged 5.2L V8 makes slightly less horsepower than the GTD at only 720 hp, yet fuel intake goes up to a wallet-aching 19.7 L/100 km. 

2. Lamborghini Revuelto: 19.9 L/100 km 

The most fuel-inefficient hybrid currently on sale, the V12-powered PHEV Lamborghini Revuelto makes an astonishing 1,000 hp. Expectedly, a 6.5L V12, regardless of being paired to a PHEV system, will still consume a lot of fuel, but the Revuelto’s combined rating of 19.9 L/100 km is still shocking.

1. Bugatti Mistral 25.0 L/100 km

The most inefficient new car on sale is also the car with the largest engine. The Bugatti Mistral uses the last iteration of Bugatti’s massive 8.0L quad-turbocharged W16 that makes an insane 1,583 hp. Without great shock, this engine chugs enormous amounts of fuel. At a rate of 25.0 L/100 km, the Bugatti isn’t the most ideal choice as a commuter car, but we’re sure no one is buying this supercar to drive to work or get groceries.