2019 BMW X5 vs Lexus RX

What's the difference?

I said at the start of this review that the new X5 is predictable… but it's more like predictably impressive.

There's a lot to like in the fourth-generation X5. You may still want to option a few extras over the standard base model car, but the 30d model embodies the idea of a luxury, tech-heavy family SUV beautifully.

The RX is a little frustrating - it's going after Mercedes and BMW and Audi in a hotly-contested space and falls over in a couple of key areas. The media/sat nav system is hopelessly outdated and the drivetrain fails to deliver a significant performance or fuel benefit (although, given its 2.2 tonnes, perhaps it delivers a miracle).

It does come with a rock-solid, scandal-free reputation, a reputation for spectacular customer service, it has a lovely cabin and it's certainly an individual looker. For plenty of people, that's quite enough.

You won't confuse the BMW X5 for one of its rivals - this is no Mercedes-Benz GLE, Audi Q7 / Q8, or Lexus RX.

But you might confuse it for one of its siblings - there's more than a passing resemblance between this new-gen X5 and the also-fairly-new-but-marginally-smaller X3 (which is now bigger than ever, too). I saw a couple of new X3 models during my week, to which I waved and then, shamefaced, realised they were actually people driving lesser BMW SUVs. Ahem.

Back on topic, our 30d tester looked particularly plush, with the, er, sporty 'M Sport' package adding what is essentially a body kit to the lower edges of the car, including distinct front and rear bumpers as well as side skirts. There is a standard rear spoiler on all models, too.

If that looks a bit too aggro for you, BMW also offers the 'xLine' pack (which has more off-road elements to it) or the 'Indulgence' luxury-look pack.

I think the exterior design is some of BMW's most convincing work for a while, with plenty of recognisable cues when compared to X5s of generations past, but also enough contemporary styling - including those gorgeous cutaway tail-lights and that (arguably too large) kidney grille on the nose.

The interior design is considerably better than we've seen in other BMWs recently, too - it's almost Audi-like in its interpretation. Check out the images to see what I mean.

There's a lot of RX and there's a lot going on in that creased, folded and teased sheetmetal. It's a unique design, with a huge 'spindle grille', big lights and the fast glass both front and rear.

It positively screeches Lexus DNA and was a polarising force on our driveway for the week. Most weren't sure, but knew for certain it was a Lexus.

Aggressively flared wheelarches like this aren't common on SUVs (although the squared-off ones are). It's right up on stilts, but the 20s you find it rolling on help to reduce its visual bulk.

That wacky rear quarter glass reminds me of the BMW i3's but it's a Lexus SUV signature. It's quite striking. Do I like it? Not really, but that's completely subjective. You can tell, though, it's built tight as a drum.

Inside is a bit calmer, beautifully laid-out and built to last. The materials are almost all top notch, with lovely switchgear and the real leather is really nice.

There is absolutely nothing avant-garde in there (apart from maybe the pinstripe effect on the centre console), it's all terribly comfortable and easy on the eye. But not exciting, though not all Lexuses are.

This particular car is very US-centric and, if I may, a particularly sunny and humid part, so it can't be too wacky.

Finally, a BMW with an interior that keeps pace with the exterior.

There's a 12.3-inch media screen with sat nav and you can control it using the rotary dial, using the screen by tapping and pinching, using voice commands or you can attempt to get the gesture control thing to work. I don't really bother much with that.

It looks great and is backed by a mighty stereo system with 10 speakers as standard, and up to 20 if you want to option them. Apple CarPlay is standard, and it's wireless - it even works with my beat-up old iPhone 6, which is awesome. But there's no Android Auto at all.

There's a big digital instrument cluster, too, and a smallish steering wheel with recognisable controls.

You wouldn't expect BMW to forget anything when it comes to interior practicality, and there are big cupholders, decent storage nooks and bottle holders in the doors, too.

And while the leather on the dash of our test car is lush, it'll cost you extra ($2700). Plus things like heated seats are on the options list, too.

As for occupant space, adults will be able to sit behind other adults back here in comfort. With driver's seat is in my position, I had heaps of legroom and shoulder room, plus decent headroom - even with the big glass roof.

The new model has a longer wheelbase, and it feels roomier than I recall the last model being. Three people my size will be able to sit next to each other reasonably comfortably, too. And of course there are dual ISOFIX child seat anchors and three top tethers as well.

BMW has thought of all the things you might need, too, with cupholders and bottle holders, plus map pockets - or, maybe more correctly, iPad pockets, with USB-C chargers above.

Now, if five seats isn't enough - or you can't stomach the look of the new X7 - you can get a set of extra seats in the boot. But sadly, if you want seven seats in your X5, you'll need to add $3700 to the price, and then you must add the 'Adaptive 2-axle' air suspension set-up at a further $3900, or $2300 if you have the M Sport model. That makes for either $7600 or $6000 for the M Sport. Yikes.

What's most annoying is that you have to bundle the third-row seats, but you can get air suspension separately if you want it.

Boot space is generous at 650 litres, and if you fold those 40/20/40 split-fold seats down that almost triples, to 1870 litres. And even though it has run flat tyres, the X5 gets a space-saver spare wheel.

There is plenty of room inside this big unit, which is very welcome. Front seat passengers have lots of storage, such as a deep central bin under the armrest, dual cupholders and big door pockets with bottle holders.

Step into the rear and there is a ton of leg and headroom although the transmission tunnel intrudes slightly for the middle passenger. Chuck them out, drop the armrest and you have two more cupholders and each door has pockets and bottle holders.

The boot is pretty big considering the angle of the rear glass. You start with 453 litres (but an expanse of flat floor), which rises to 924 litres with the split-fold seats down. That seems conservative given just how much space you appear to have.

The RX450h F Sport lightens your bank account of $102,460 before on-road costs, the only hybrid SUV within cooee of this price.

That nets you 20-inch alloys, a 15-speaker stereo, dual-zone climate control, heated and cooled electric front seats, reversing camera, that ever rare CD player, keyless entry and start, a solid safety package, reversing sensors, active cruise control, sat nav, a massive sunroof, auto LED headlights, head-up display, partial leather interior, power tailgate, auto wipers and a space-saver spare.

The Lexus media system is run from the gigantic dash-mounted screen that is shamed only by those massive Tesla units.

Sadly, the joystick-style control remains as does the very confusing software system that is less than delightful to use. It's such a shame that a tech-laden machine is let down by the world's most baffling entertainment system.

Once you get it working and understand it, it's okay, I guess, but several years into this job I still can't easily fathom how it works. And that naff analogue clock...

F Sport cars also pick up adaptive suspension and a several driving modes to liven things up.

Under the bonnet of the 30d model is a twin-turbocharged 3.0-litre straight six-cylinder engine producing 195kW of power (at 4000rpm) and 620Nm of torque (from 2000-2500rpm). It has a standard-fit eight-speed automatic transmission with paddleshifters, and has permanent all-wheel drive.

Those engine specs are strong, and it has a claimed 0-100km/h sprint time of just 6.5 seconds - faster than some hot hatches. If you really want a silly fast SUV, you could spend extra and get the M50d with its quad-turbo drivetrain.

Towing capacity is 750kg unbraked and 2700kg braked (1900kg for the xLine version), and the higher number is good, but still not best in class. An Audi Q7 or Q8 will tow more (3500kg), if that matters to you. BMW Australia has confirmed an upgrade to towing will be offered from April production, up to 3270kg.

You can choose three different powertrains in the RX - a 3.5-litre V6, a 2.0-litre turbo four-cylinder, or this one, the 3.5-litre V6 with hybrid.

As a series hybrid it can run for short distances on electric only before firing up the V6 to supply charging and motivation.

The 3.5 produces 193kW/335Nm along with the electric motor. That torque figure seems low and it probably is, but that's a function of the weird way of measuring torque from a hybrid unit. The combined power figure, however, is 230kW.

The hybrid system is hooked up to Lexus' CVT auto and sends power to all four wheels. Lexus says the 450h will complete the sprint from 0-100km/h in 7.7 seconds, which isn't bad for a 2210kg SUV.

The claimed fuel use for this version is 7.2 litres per 100km. On test, we saw a little higher than that, at around 10.6L/100km.

Prepare yourself for an expensive trip to the servo when you eventually get there, as the diesel fuel tank capacity is 80 litres.

While the claimed use is better than many others, the X5 oddly doesn't come with any form of mild-hybridisation as other SUVs in the class do. It does have a diesel particulate filter and requires AdBlue, though.

The official combined cycle figure is listed as 5.7L/100km. And, uh, yeah, we didn't get that. I did manage 8.9L/100km over the week, which included a long motorway run from Sydney up to the Blue Mountains (a roughly 160km round trip).

The last BMW X5 was sporty to drive, but the steering was a bit hard to get used to, and the ride could be pretty punishing on bad roads.

This new-generation model has improved on both counts, with steering that is light and direct without being too hefty or trying to offer the ultimate sports-car-on-stilts experience, and adjustable dampers on all models that allow you to choose what you want the drive to be - comfortable (choose Comfort) or sporty (you guessed it, choose Sport).

It still has run-flat tyres, though, so the ride is a little rigid - particularly over sharper edges in urban settings. And even putting it in Comfort mode didn't dissipate that sensation - in fact, I think it made it a little worse, because it was very softly damped but still thumped into bumps. Sport mode is too hard in town, but great on a windy road.

My choice for the week was Adaptive mode, which chooses the most appropriate settings for how you're driving it.

Of course, those modes also affect throttle response, though the big six-cylinder diesel engine is strong and solid no matter the mode. Its roll-on acceleration is exceptional, but there is a bit of low-rev lag when you take off from a standstill.

But once you're moving, the transmission is smooth and clever, the engine revving without any diesel clatter and hardly any vibration through the cabin. It's really nicely refined, and very quiet, too. Effortless is the word that comes to mind.

Oh, and it's quicker than a car weighing 2110kg (kerb weight) really ought to be - arguably faster than you'll ever need to be on the way to drop the kids at school.

Right. So this is a salutary lesson about tyre pressures. The first few days the tyres were only pumped up to 200kpa (29psi). That's an easy 100kpa (14psi) short of the required 300 (43psi).

Every time I, or my wife, went around a corner, the big Dunlop Sport Maxx SPs would squeal and squirm and it was most unsatisfactory.

So check your tyres, because the extra 100kpa makes all the difference. Also, the number of service stations it took to find a working pump was unacceptable. Pull your socks up, Sydney.

Anyway.

Correct tyre pressures enacted, the big Lexus turned into a comfortable, competent cruiser. Its motorway performance is super-impressive, purring along the M4 and it's ridiculously poor surface like it was born to it. Which it sort of was.

The hybrid drivetrain allied to the CVT is mostly whisper quiet. It's not the most responsive combination, the initial step-off of the electric motor's torque soon giving way to the rubber band effect of the transmission.

It doesn't feel as swift as the claimed 7.7 seconds and it would be nice if the drive select dial made a genuine difference to the throttle and transmission's response.

In the city, it's a proper wafter, moving about the broken down city streets of Sydney without fuss and a plush ride that's a bit of a surprise given the huge wheels and substantial weight of RX.

It's all very easy and pleasant but the wild looks do not match the experience. Which is not a criticism, just an observation.

The RX ships with eight airbags (including knee airbags for both front seats), ABS, stability and traction controls, blind spot sensor, reversing camera, forward collision warning, forward AEB and reverse cross traffic alert.

There are three top tether restraints and two ISOFIX points. 

The RX scored a maximum five ANCAP stars in January 2016.

The mainstream brands might be moving to longer warranty plans, but BMW's - along with the other German luxury brands - remains set at three years/unlimited kilometres. That includes roadside assist, too.

The servicing is condition-based - so, your car will tell you when its time for some maintenance. And you can pre-pay for servicing, with the base version of that plan costing a reasonable $1995 for five years/80,000km. That covers the basics, and you'll need to visit the dealer every 12 months/24,000km.

Lexus offers a fence-sitting four year/100,000km warranty with roadside assist thrown into the bargain for the same period. 

Service intervals arrive at 12 month/15,000km and there is, sadly, no capped-price servicing.

Lexus will, however, promise you a car for the day or come and get your car from you and drop it back when the service is done. And it will be washed and vacuumed. The website makes a big deal about that.