Lexus GS VS Mercedes-Benz A35

There are things you expect in a Lexus. Quietness. Composure. Smoothness. The GS delivers all three of those things effortlessly. But it has a few extra things in its bag that I can't say I was expecting.

For a start, the 3.5-litre V6 moves the car without any carry-on and in doing so, I was constantly amazed at how quickly the speed in the head-up display reached the posted limit. It just doesn't feel or sound like a six second car, but there you are. The transmission is virtually faultless, the engine sound distant and refined, the power impressive.

It's a heavy car, no question, but two things work to make it feel much lighter. First - and it doesn't matter which mode you choose - the adaptive suspension somehow knocks about 200kg out of how heavy the car feels. The brakes, while a little soft on pedal feel when you first step on them, are very effective and again help to make the car feel lighter than it is.

The four driving modes are quite distinct. As usual, Eco makes everything soft and doughy or as I prefer to say, unpleasant. Normal is great for every day, with just the right throttle response and steering weight.

Moving to sport ups the aggro slightly while Sport+, while never harsh, firms everything up to the point where it starts to feel like a different car. Sport+ makes the car feel race-car pointy, the suspension holds the body in check and the power seems readily available without jerky progression

The all-wheel steer is a big part of the change in feel. It's is especially sharp in Sport+ mode. The steering's gearing changes up quite a bit, meaning a lot less steering lock required for your favourite hairpin bend. Of course, at real speed it all calms down because neither you nor Lexus are fond of sneezy lane-changes or Armco-swiping. At first I thought it just made the big car feel a bit too nervous but as I got used to it (and was able to dial it down by switching back into a less racy mode) I found it fun but a little bit out of character with the car itself.

And just because it's the F Sport, that doesn't mean it can't do all the things you'd expect from a Lexus. You can still waft, you can still creep up on people and it's really very comfortable when you're cruising or stuck in traffic. 

On paper this seems like the ideal option for those who know they’ll never really be able to take advantage of the outputs of an A45 or CLA45’s ludicrous power and torque figures.

In practice? It mostly lives up to that notion - though just like an A45 or CLA45, you’re going to enjoy it a lot more when you’re giving it the beans. 

Driving with intent, the engine and transmission work together amazingly well. The transmission itself is thoughtful and smart shifting, swapping cogs exactly when you think it should - while you have paddle shifters available to use, in most cases you’re not going to need them.

The engine itself is an absolute weapon. There’s lots and lots of pulling power, it’s linear in the way it delivers its power, and there’s a little bit of pop and crackle from the exhaust - personally, I would like even more. I guess that’s where an A45 or CLA45 comes into its own.

The steering is superb for an all-wheel drive car, too. It’s direct and accurate, and while you can feel the electronics shuffling the power and torque between front and rear axles it’s a really nicely balanced and very easy car to drive fast – at times even faster than you really should be. 

In Sport mode and Sport Plus mode the suspension and steering are tightened up, with taut responses but the suspension is never crunchy or uncomfortable. Braking performance is very good, too.

In Comfort mode though, I struggled to come to terms with the A35 a little. In my mind, it lived up to the notion of a sporty sedan a lot more readily than it did that of a compact luxury sedan. It just feels like it’s meant to be on a twisty road, not dealing with daily drudgery in commuting.

One not-very-luxurious element was the road noise intrusion, which was the worst of any new car I can recall experiencing. That might seem a dramatic claim, but the booming tyre roar on coarse chip road surfaces, including major Sydney freeways, was verging on unbearable. I measured it on my smartphone, and 78 decibels was the maximum readout.

And while very impressive under pressure, the powertrain is somewhat doughy in less demanding situations. There’s some lag to contend with, and a little bit of lunging from the transmission, too. However, it was during downshifts that I found the transmission’s behaviour most questionable, with some shift-shunts when slowing to a halt in urban driving. 

One unexpected finding was the 'Route-Based Speed Adaptation' system’s behaviour, which was active in the car I was driving. The tech uses the car’s mapped position to guide its adaptive cruise control behaviour. In theory it’s a very smart idea - the car will slow itself down if it predicts you’re about to approach a tight bend and you’ve got it set at the speed limit. Or if you’re approaching a roundabout, it’ll think ahead, too.

But during my time in the car, I had an issue that I found could be potentially dangerous. Having set the speed at 80km/h in a relatively new tunnel in Sydney’s west (the WestConnex M4, opened July, 2019), the system couldn’t place the car’s location, which meant the car believed it was still on surface streets. 

On multiple occasions the car slowed dramatically thinking I needed to turn a corner that didn’t exist on the road I was driving on. My instant thought was: “What if the person behind me wasn’t looking at the road ahead?” I’ve seen enough drivers with their eyes aimed at the phone in their lap and not the road ahead, to know this is a distinct possibility.

There’s also a risk from tailgating trucks, which seem to be more prevalent in Sydney’s west than anywhere else on the planet. It’s a potential risk, even if the Benz has clever tech that can flash the tail-lights if the car’s systems predict there’s a chance of being rear-ended.

Mercedes-Benz’s Aussie team let me know that the map software wasn’t up to date, which is why the car didn’t understand the situation. It’s technology you can disable by simply delving into the menus on the MBUX system, but I’d recommend you try it out to see if you’re comfortable with it.