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Lexus RZ running costs and reliability

2022 onwards (change model)
Running costs rating: 4.2 out of 54.2

Written by Jake Groves Updated: 22 July 2025

Miles per pound (mpp)

Low figures relate to the least economical version; high to the most economical. Based on WLTP combined fuel economy for versions of this car made since September 2017 only, and typical current fuel or electricity costs.
Electric motors, home charging 10 - 12.4 mpp
Electric motors, public charging 5.4 - 6.7 mpp
What is miles per pound?

Fuel economy

Low figures relate to the least economical version; high to the most economical. Based on WLTP combined fuel economy for versions of this car made since September 2017 only.
Electric motors 3.4 - 4.2 miles/kWh
View mpg & specs for any version
  • Improved efficiency figures on all versions
  • New chassis and engines are untested
  • Relatively standard warranty setup

What are the running costs?

Running costs vary wildly depending on where you choose to charge. Generally speaking plugging in at your address via a home charger will offer the cheapest rates, while the most expensive will be via a rapid charge found at a service station.

Range and charging

The 350e version claims the highest WLTP driving range, too; 353 miles for those on 18-inch wheels or 316 miles for models on 20-inch wheels. For the 500e model, Lexus says it’s capable of 311 or 283 miles respectively. Choose the top-level 550e F Sport (which is only available with 20-inch wheels) and Lexus says you can achieve a 280-mile e-range.

More than before, we’re inclined to believe these range figures are possible given the tangible improvements in efficiency. Our real-world test runs netted roughly 3.8 to 3.9 miles per kWh regardless of powertrain option on a mix of motorway, country roads and urban town driving. That’s a lot better than the pre-facelift RZ.

As for charging, Lexus says all models now come with a 22kW AC charger allowing for relatively speedy charges on home chargers – so long as your home wallbox is capable of it – and 150kW DC charging.

Servicing and warranty

The RZ is eligible for Lexus’ 10-year/100,000-mile Relax warranty. This comprises an initial three-year warranty, followed by up to a further seven years of service-activated warranty if you remain within the dealer network. For the first three years of the car’s life, owners can have it serviced at a place of their choice.

When the new car warranty period expires, drivers can benefit from an additional 12 months (or 10,000 miles) warranty when their vehicle has a qualifying service at an authorised Lexus workshop. The limit is 10 years/100,000 miles, whichever comes first.

Lexus is also confident about the longevity of its batteries, with the firm expecting them to retain around 90% capacity after 10 years.

Ongoing running costs

Road tax £195 - £620
Insurance group 38 - 45
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