Lexus NX 450h+ Long-Term Review: 6,489-Mile Test Results

The Lexus NX 450h+ stands out as a premium plug-in hybrid SUV that blends luxury, efficiency, and practicality. Over several months and thousands of kilometers, this model proved its worth in diverse conditions, from urban commutes to highway journeys and even challenging weather.

Powertrain Performance and Efficiency

At the heart of the NX 450h+ is a 2.5-liter four-cylinder petrol engine paired with electric motors, delivering a combined 302 horsepower in the UK spec or up to 227kW in some markets. This setup provides brisk acceleration, with a 0-400m sprint in about 6.3 seconds, making it feel lively without sacrificing smoothness.

Real-world fuel economy shines brightest when plugged in regularly. Testers reported averages of 70mpg over 6,489 miles, with peaks hitting 180mpg during initial charged drives covering 305 miles where electricity costs were just over £20 and petrol £13. Even after battery depletion, efficiency settled around 5.5-6.0L/100km (about 47-50mpg), outperforming many non-plug-in rivals.

• EV Range: Consistently 40+ miles on a full charge, ideal for daily errands.
• Combined Economy: Up to 38mpg in mixed US testing, with 37 miles EV-only.
• Post-Depletion: Drops to 6.0L/100km but self-charges back toward 5.0L/100km.

Seamless transitions between petrol and electric power minimize range anxiety, and the 18.1kWh battery supports short pure-EV trips effectively. Official WLTP figures claim 256-313mpg with 21-25g/km CO2, though real-world results depend on charging habits.

Driving Dynamics and Ride Quality

Equipped with F Sport adaptive variable suspension, the NX 450h+ balances sportiness and comfort. Sport S and S+ modes enhance engagement, offering precise handling on wet or dry roads thanks to all-wheel drive. It’s not a hardcore sports SUV but excels as a confident cruiser, with direct steering and planted roadholding.

Highway prowess is a highlight: quiet cabin, powerful pull, and stability make long trips effortless, even in rain. The ride absorbs bumps well despite the firmer F Sport setup, providing a composed experience.

Interior Comfort and Practicality

Lexus’s renowned build quality shines inside, with premium materials and a spacious cabin. It’s accommodating for passengers and cargo, feeling built to last. The F Sport Premium Plus trim adds luxury touches like a sunroof, though options like metallic paint push the price toward £60,450 new.

Tech includes intuitive hybrid management and driver aids that can be toned down for less intrusion. Insurance group 40 reflects its premium positioning, with quotes around £944.

Real-World Ownership Experiences

Over 6,489 miles, mileage logs showed consistent gains: 86.2mpg at 1,398 miles, 180mpg early on. Cold snaps prompted parking it due to lacking all-season tires, but it handled snow indirectly well. A minor issue—a sticking fuel-filler flap—was the only hiccup.

In Australia, a 1,000km test used 55 liters total (5.5L/100km), validating low running costs. Company car drivers benefit from competitive BIK rates, though some PHEV rivals edge lower.

Reliability and Running Costs

Lexus hybrids are famed for durability, and the NX 450h+ upholds this with minimal issues. CO2 at 26g/km means £155 annual tax. Electricity tariffs impact totals, but regular plugging keeps costs down versus pure petrol SUVs.

• Pros: Exceptional efficiency, smooth power, premium feel.
• Cons: High upfront cost, firm ride in Sport modes, minor niggles like filler flap.

Who Should Consider the NX 450h+?

Perfect for EV skeptics transitioning via plug-in tech in a refined SUV package. It nails efficiency (70mpg real-world), comfort, and versatility without full EV commitment. Rivals may offer lower BIK, but few match the seamless hybrid integration.

Frequently Asked Questions

What is the real-world range of the Lexus NX 450h+?

Around 40-46 miles on battery, with total range exceeding 500 miles when combining petrol.

How does fuel economy compare after battery depletion?

Settles at 5.5-6.0L/100km, still efficient for a premium SUV.

Is the F Sport suspension too firm for daily use?

No—adaptive setup offers good compliance, excelling on highways.

What are the running costs?

Low with plugging: 70mpg average, competitive tax and insurance.

Any common issues reported?

Isolated cases like fuel flap sticking; otherwise reliable.