2021 Lexus IS III (XE30, facelift 2020) Dimensions, Size & Specs

The Lexus IS III has a width of 1840 mm, or about 72.4 inches. This width is fairly standard for compact luxury sedans, allowing for confident road presence while still maintaining ease of maneuverability in city settings. Its moderate width supports comfortable seating for passengers without making it excessively bulky for tight parking spaces.

The Lexus IS III sedan stands between 1435 mm and 1440 mm tall, converting to roughly 56.5 to 56.7 inches in height. This relatively low and sleek profile contributes positively to aerodynamics and handling performance, enhancing stability at higher speeds. The low height also aids in lowering the vehicle's center of gravity, improving cornering dynamics while offering adequate headroom for occupants.

The curb weight of the Lexus IS III ranges from 1685 kg to 1780 kg (approximately 3715 to 3924 pounds). This weight reflects the combination of luxury features, build quality, and performance components. While a heavier vehicle can potentially reduce fuel efficiency compared to lighter competitors, Lexus balances this with efficient powertrain options and advanced engineering to ensure smooth handling and responsive driving dynamics.

The Lexus IS III provides a luggage capacity ranging from 306 liters to 450 liters, or about 10.8 to 15.9 cubic feet. This luggage volume is typical for a luxury compact sedan and can accommodate suitcases, groceries, or daily bags comfortably. The higher end of this range likely comes from configurations with rear seat folding or optional storage enhancements, making it reasonable for both daily use and extended journeys.

The Lexus IS III offers a ride height or ground clearance of 140 mm, which is around 5.5 inches. This clearance is standard for sporty sedans, striking a balance between a low center of gravity for performance and enough height to handle common road irregularities without risk of undercarriage damage. While suitable for city and highway driving, it is less optimal for rough terrain or off-road conditions.

Yes, the Lexus IS III's dimensions are suitable for standard residential garages in most regions. With a length of up to 4757 mm (187.2 inches), width of 1840 mm (72.4 inches), and a height up to 1440 mm (56.7 inches), it fits comfortably within the typical garage space, which generally measures around 6 meters (236 inches) in length and 3 meters (118 inches) in width. Drivers should still consider mirror clearance and garage storage items but overall, parking this vehicle in a standard garage should be hassle-free.

Compared to the Lexus IS II generation, the Lexus IS III (XE30) is notably longer and slightly wider. The third generation measures up to 4757 mm (187.2 in) in length versus roughly 4565 mm (179.7 in) of the IS II, providing increased cabin space and improved road presence. The width of the XE30 is 1840 mm (72.4 in), slightly wider than its predecessor which was about 1770 mm (69.7 in), contributing to a more planted stance. Height remains similar, but the newer generation offers enhanced aerodynamics and refined styling, reflecting Lexus’s focus on blending sportiness with luxury comfort.

In terms of size, the Lexus IS III competes closely with rivals such as the BMW 3 Series and Audi A4. The Lexus’s length ranges from 4710 to 4757 mm (185.4 to 187.2 inches), comparable to the BMW 3 Series which is around 4709 mm (185.4 in), and Audi A4 at about 4762 mm (187.5 in). Width of the IS III, at 1840 mm (72.4 in), is between the BMW's approximate 1827 mm (71.9 in) and Audi's 1847 mm (72.7 in). This shows the IS III aligns well within the segment’s standard dimensions. Feature-wise, Lexus emphasizes luxury, reliability, and hybrid powertrain options, differentiating itself with Japanese craftsmanship, while German competitors often highlight sportier driving dynamics and advanced infotainment systems.

The Lexus IS III offers a variety of rim sizes including 8.5J x 18, 9.5J x 19, and 8.5J x 19 inches, paired with tire sizes of 235/45 R18, 265/35 R19, and 235/40 R19. Larger rims and wider tires tend to enhance the vehicle’s grip, cornering abilities, and overall sporty feel due to the increased contact patch and stiffness. The 19-inch setups provide a more aggressive stance and improved road feedback, while the 18-inch setups prioritize ride comfort and can contribute to slightly better fuel economy. This selection allows buyers to tailor the balance between performance and comfort according to their preferences.