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Lexus trademarks LX600 name

A trademark filing may have revealed the name of the next flagship Lexus SUV, sparking speculation as to what engine it’ll use.
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Let’s count in Lexus LX nameplates! 450, 470, 570… 600?

According to a recent filing with the United States Patent and Trademark Office, discovered by AutoGuide, that’s the next number in the sequence, indicating the next-generation LX will wear LX600 badges.

While the numerals of past and present Lexus LX models have indicated the displacement of their engine – e.g. the current LX570 with its 5.7-litre V8 – Lexus has been less literal with their nameplates lately.

For example, the IS300, GS300, NX300 and RX300 all use a turbocharged 2.0-litre four-cylinder engine.

The number 600 has previously been used on the fourth-generation Lexus LS600h, which used a 5.0-litre V8 engine mated to an electric motor. It was replaced with the Lexus LS500h which uses a 3.5-litre V6 engine mated to an electric motor.

Though it’s pure speculation here, the Lexus LX600 could potentially use an engine larger and/or more powerful than the twin-turbocharged 3.5-litre V6 in the LS500 flagship sedan.

We know Toyota, instead of introducing a naturally-aspirated petrol V8, may instead offer a turbocharged V6 in the LandCruiser line. In theory, such an engine, when under the bonnet of a Lexus, would receive the 500 name.

AutoGuide says there have been rumblings about a new twin-turbo V8 for the Lexus brand.

Alternatively, the LX600 name could simply signify a bored and stroked version of the existing 5.7-litre V8, which is also used in range-topping versions of the US-built Toyota Tundra and Sequoia.

One thing’s for sure, though: the lack of a ‘h’ in the name indicates the LX600 won’t be a hybrid. That’s not to say a hybrid LX isn’t a possibility, however, considering Toyota’s pledge to roll out hybrid or electric variants of its entire range by 2025.

If there’s a hybrid LandCruiser coming, odds are a hybrid LX will follow.

The 300-series LandCruiser isn’t expected until 2021 so the LX600 should arrive around then, too. That means the current LX will have been on sale here for 13 years, though the burly 4WD did receive a fairly comprehensive makeover inside and out in late 2015.