Lexus IS 300h Review: Hybrid Luxury, MPG, Pros & Cons

The Lexus IS 300h stands out in the compact executive segment as a petrol-electric hybrid saloon prioritizing refinement, reliability, and low running costs. Powered by a 2.5-litre engine paired with electric motors, it delivers combined outputs around 220 horsepower, achieving 0-62mph in approximately 8.3-8.5 seconds.

Powertrain and Performance Insights

At its core, the IS 300h employs Lexus’s self-charging hybrid system, featuring a 2.5-litre four-cylinder petrol engine augmented by electric motors. This setup produces a system total of 220bhp in later models, with torque at 221lb ft, enabling a top speed of 125mph. The continuously variable transmission (CVT) integrates seamlessly with the hybrid tech, allowing silent electric-only driving at low speeds before the petrol engine engages smoothly.

Drivers praise the grip and power delivery for everyday use, making it rewarding on winding roads. However, the CVT often feels intrusive, creating a droning noise under hard acceleration that lacks the charisma of traditional automatics or rivals’ diesels. Real-world 0-62mph times hover around 8.4 seconds, competent but not exhilarating.

Despite these, the hybrid’s efficiency shines, with official figures up to 64.2mpg and CO2 as low as 103g/km, undercutting many diesel competitors for company car tax benefits.

Driving Dynamics and Ride Quality

The IS 300h handles with poise, its rear-wheel-drive layout providing balanced chassis dynamics. Steering is accurate and weights up progressively, while pedal responses remain sharp despite the CVT. It’s comfortable over long distances, isolating occupants from road imperfections effectively.

• Grip and Stability: Excellent traction in corners, aided by low center of gravity from hybrid batteries.
• Refinement: Near-silent cabin during EV mode; engine transitions are undetectable.
• Limitations: Lacks the agility of European rivals like BMW 3 Series; feels more cosseting than sporty.

Long-term tests confirm consistent real-world economy around 50-55mpg on mixed routes, proving its efficiency claims. The F-Sport variant adds sharper suspension but retains overall composure.

Interior Comfort and Practicality

Lexus’s hallmark luxury defines the cabin: premium materials, supportive seats (ventilated in higher trims), and ample space for four adults. The layout feels roomy and well-built, with a minimalist dash in newer iterations supporting Apple CarPlay and Android Auto.

However, boot space suffers from the battery pack under the floor, reducing capacity compared to non-hybrids. Infotainment, while improved, can be fiddly with its trackpad or touch controls in older models.

• Front seats: Highly adjustable, with cooling/heating options.
• Rear legroom: Generous for class.
• Boot: Compromised but adequate for weekend use.

Technology and Safety Features

Equipped with Lexus Safety System+, including adaptive cruise, lane keep, and blind-spot monitoring in Premier/Executive trims. The touchscreen interface handles navigation, connectivity, and vehicle settings intuitively in updated versions.

Standout tech includes a reversing camera, heads-up display in top specs, and premium Mark Levinson audio. Reliability remains a forte, with Lexus hybrids renowned for longevity.

Fuel Efficiency and Ownership Costs

Hybrid efficiency delivers 45-49mpg officially, with users reporting 50mpg+ on highways. Low CO2 (103-144g/km) means BIK tax under 20% for company drivers, cheaper than diesels. Maintenance is minimal due to regenerative braking and sealed batteries.

Petrol tank size limits range slightly, but overall costs are competitive. Priced from around £30,000 used (2015 models), it holds value well.

Design and Styling Appeal

The IS 300h’s spindle grille and sharp lines give it a bold presence. F-Sport adds aggressive bumpers and 19-inch wheels. Sonic Titanium paint enhances its premium look. It’s luxurious yet understated, appealing to those seeking Japanese elegance over Germanic aggression.

Rivals and Market Position

Against BMW 3 Series, Audi A4, and Mercedes C-Class, the IS 300h excels in reliability and hybrid economy but trails in driving thrill and tech polish.

Pros and Cons Summary

• Pros: Outstanding reliability, low tax/emissions, comfortable ride, plush interior.
• Cons: CVT drone, limited boot space, less agile than rivals.

Who Should Buy the Lexus IS 300h?

Ideal for company car drivers valuing efficiency, executives seeking refinement, or reliability-focused buyers. Skip if you crave sporty dynamics or cutting-edge infotainment.

Frequently Asked Questions (FAQs)

Is the Lexus IS 300h reliable?

Yes, Lexus hybrids boast superb long-term dependability, often exceeding rivals.

What is the fuel economy of the IS 300h?

Official up to 64mpg; real-world 45-55mpg depending on conditions.

Does it have Apple CarPlay?

Later models include Apple CarPlay and Android Auto via touchscreen.

How does the CVT feel?

Smooth for cruising but noisy under acceleration.

What’s the boot space like?

Reduced due to batteries, around 450 litres.

Final Verdict

The Lexus IS 300h delivers luxury hybrid motoring with unmatched reliability, though it prioritizes comfort over excitement. A smart choice for efficient executive transport.