BMW 850I vs Tesla Model X
- by Carsguide.com.au
- Apr 24, 2020
- 0 Comments
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Verdict
Does the world really need a car as outrageously loud, over-the-top, exclusive and stupidly fast as BMW’s new 8 Series? Obviously not, but BMW clearly felt that its range, and its customers, could do with something like this. On paper, and even from the kerb, it seems a strange beast - luxurious and yet lightning quick - but from the driver’s seat it just instantly makes sense. And makes you smile. Scarily, there’s an even faster 8 Series Competition version to come…
Verdict
After nearly 700km of testing with both cars, it’s fair to say that the Tesla is indeed a capable tow vehicle, provided you keep the distances relatively short and plan around charge station locations.
Overall average - Penrith to Bathurst to Penrith
Fuel and energy consumption will always depend on the driving conditions, which is why we chose different routes for each leg of our testing.
Averaged across the two legs, towing the caravan with the Model X used 101 per cent more energy than without, or halved its driving range, which sounds a bit scary.
The LandCruiser by comparison added 63 per cent on average, which is still a big difference, but matters less in the real world when its big fuel tanks would still give you about 760km of driving range, which can be refilled quickly at any diesel-stocked servo.
So you could do a weekend trip with the caravan from Penrith with one supercharge in Bathurst, but it would’ve been highly unlikely to manage the extra 55km if you were leaving from Sydney CBD.
The bottom line is that there’s plenty of things - like smaller camper trailers - lighter than our caravan that will help the Tesla to do the towing job better right now.
Compared to the ‘Cruiser, the Tesla is a lesson in the benefits of a lower centre of gravity and road-focused handling.
As always, bigger batteries and more recharge points will go a long way to rectifying the Tesla’s towing shortcomings, and I'm sure we'll get there eventually.
But no matter what, its acceleration performance under load is simply excellent.
Thanks to our friends at Avida for making this test possible with the use of the 17-foot Avida Wave Tourer Electric Pop-Top single-axle caravan. They can also be reached on 1300 428 432.
Driving
There is a sizeable distance between driving a small, lithe sports car that can sprint from 0 to 100km/h in a scorching 3.7 seconds, and then piloting something that feels as large, and louche, as a cruise ship that can do the same thing.
Accelerating in the M850i is an experience that can only be described as hilarious. There’s just so much mass attempting to move so quickly that it defies belief. The way the nose rears into the air, and the rear end seems to dip towards the ground, brings to mind a bucking bronco, although a feisty polo pony would probably be more appropriate.
It’s easy to see why this car is all-wheel drive rather than the traditional BMW rear-driven layout, because there’s just no way you could get all that grunt to the ground with two wheels, or not without some serious power oversteer issues.
For a car that weighs more than 1.8 tonnes, the 8 Series is surprisingly fluid and involving on winding stretches of road. It feels hunkered down and hammered into the road, which is less of a surprise, but the steering is so perfectly weighted and the power delivery so well calibrated that it really encourages you to push on, and rewards you sense of adventure with smile-widening pace.
It’s quite something to suggest of a car that costs a quarter of a million dollars, but the M850i actually exceeds your expectations in terms of driving joy. On paper, it looks like a straight-line bully, or merely a very grand grand tourer, and it does eat up the miles on a freeway with class and ease, but when you want to point it at a mountain pass, it excels there as well.
We drove the new 8 Series back to back with BMW’s also-new Z4, and what really stood out was not just the gulf in power and poise, but the huge difference in the ride/handling balance.
The M850i really can soak up the worst our roads can throw at it with aplomb, while still making you feel connected to the ground beneath you, and inspiring confidence, and its abilities really did make the Z4 feel very brittle and hard indeed.
To be fair, we didn’t get to throw this big luxo-barge at any sections of really sharp S-bends, or 35km/h corners, and no doubt it would be challenge for it to change direction quickly, but through fast sweepers it really does excel.
And as far as its grand-touring design brief, it absolutely nails it.
Driving
Energy consumption is just one element of a tow vehicle though, with stability, braking and acceleration performance being the most important details.
The big ‘Cruiser is always a safe bet for towing heavy loads, but it's fair to say its off-road ability, tall body and short wheelbase mean it could be better on the road, and the Tesla goes some way to proving that.
With all those batteries mounted nice and low, the Tesla is significantly more stable with 1.7 tonnes on the back than the LandCruiser, in all conditions. It’s also helped by that longer wheelbase.
The Tesla’s airbag suspension is another surprise advantage, and while it can be a bit choppy around town over minor bumps, bigger bumps on the highway are soaked up really nicely and it all settles quicker than with the LandCruiser - even with the caravan on the back.
Tesla is famous for instant acceleration at any speed, and this effect remains when towing. The LandCruiser’s twin-turbo V8 (with max torque available from 1600-2600rpm) has long been a benchmark for tow vehicles, but the Model X makes it feel sluggish by comparison.
You know how caravan vehicles are usually the slow ones up hills? This time, we were the ones doing the overtaking, even up the steep bends heading out of Lithgow. To overtake, it just takes the slightest flex of your right foot.
Clearly there’s a big caveat though when it comes to how much energy it’s consuming while you’re enjoying that performance, and it’s deceptive because it doesn’t make any more noise like a conventional engine when you’re pushing it.
You’d also think the weight of the van would overcome the engine-braking effect of the regenerative brakes, but they are still very effective at conserving your brakes downhill and preventing the car from running away from you, and no doubt giving the batteries a bigger boost at the same time.
On that note, the LandCruiser’s cruise control also does a great job of witholding speed on downhill runs, proactively dropping gears to engine brake enough to keep the Avida Wave in check.
Interested in a BMW 850I?
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