IS 350 RWD
What the IS 350 adds over the IS 300
| Spec | IS 300 | IS 350 |
|---|---|---|
| Curb weight (maximum) | 3715 lbs | 3748 lbs |
| Curb weight (minimum) | 3715 lbs | 3748 lbs |
| Aspiration | twin turbo | naturally aspirated |
| Cylinder count | 4 | 6 |
| Engine displacement | 1998 cc | 3456 cc |
| Fuel injection system | Electronic Fuel Injection (EFI, D-4ST) | Electronic Fuel Injection (EFI, D-4S) |
| Horsepower | 241 hp | 311 hp |
| Torque | 258 lb-ft | 280 lb-ft |
| Engine type (full description) | In-line 4-cylinder aluminum block and cylinder heads | V6, aluminum block and cylinder heads |
| Valve configuration | DOHC 16-Valve | DOHC 24-Valve |
| Gross vehicle weight rating | 4690 lbs | 4700 lbs |
| MPG (city) | 21 mpg | 20 mpg |
| MPG (combined) | 21 mpg | 23 mpg |
| MPG (highway) | 31 mpg | 28 mpg |
Standard here, not on the base trim: F SPORT 19-in split-five-spoke alloy wheels with Dark Metallic finish, F SPORT exhaust tips, F SPORT exterior styling, including unique front and rear bumpers, grille surround, rocker moldings, rear spoiler and rear valance, Heated front seats, Heated leather-trimmed steering wheel, Lexus Memory System for driver's seat, outside mirrors and steering wheel, Power tilt-and-telescopic steering wheel, Rain-sensing windshield wipers, Rear armrest with cupholders, Ten-way power-adjustable driver's seat (including lumbar). Eight-way power-adjustable front passenger's seat and 60/40-split fold-down rear seat.
Specifications
Source: manufacturer press kitBrakes
| Front brake diameter | 335.3 mm |
| Front brake type | ventilated disc |
| Rear brake diameter | 297.2 mm |
| Rear brake type | solid disc |
| Parking brake type | Electronic |
Cargo
| Cargo volume behind 2nd row | 10.8 cu-ft |
| Total interior volume | 90.2 cu-ft |
Connected Services
| Connected services brand | Lexus Interface |
| Connected services trial (premium tier) | 36 months |
| Connected services trial (standard tier) | 36 months |
Dimensions Exterior
| Ground clearance | 5.5 in |
| Overall height | 56.5 in |
| Overall length | 185.4 in |
| Overall width | 72.4 in |
| Wheelbase | 110.2 in |
Engine Basics
| Aspiration | naturally aspirated |
| Cylinder count | 6 |
| Engine displacement | 3456 cc |
| Fuel injection system | Electronic Fuel Injection (EFI, D-4S) |
| Engine type (full description) | V6, aluminum block and cylinder heads |
| Valve configuration | DOHC 24-Valve |
Engine Output
| Horsepower | 311 hp |
| Torque | 280 lb-ft |
Fuel Economy
| MPG (city) | 20 mpg |
| MPG (combined) | 23 mpg |
| MPG (highway) | 28 mpg |
Fuel System
| Minimum recommended octane | 91 |
| Fuel tank capacity | 17.4 gal |
Headroom
| Front headroom | 38.2 in |
| Third-row headroom | 36.9 in |
Legroom
| Front legroom | 44.8 in |
| Third-row legroom | 32.2 in |
Seating
| Passenger seating capacity | 5 |
Shoulder Room
| Front shoulder room | 55.9 in |
| Third-row shoulder room | 53.4 in |
Steering
| Steering type | Rack & Pinion EPS |
| Turning radius (curb-to-curb) | 34.2 ft |
Suspension
| Front suspension type | Double wishbone type with high-mount upper arms, coil springs, gas-filled shock absorbers and stabilizer bar |
| Rear suspension type | Multi-link with coil springs, gas-filled shock absorbers and stabilizer bar |
Transmission
| Final drive ratio | 3.1 |
| Transmission speeds | 8 |
| Transmission type | automatic |
Weights
| Curb weight (maximum) | 3748 lbs |
| Curb weight (minimum) | 3748 lbs |
| Gross vehicle weight rating | 4700 lbs |
Standard & optional equipment
Source: manufacturer press kitSafety6 std · 2 opt
- Panoramic View Monitor optional
- 10 Airbags
- Anti-lock Braking System (4 channel, 4 sensor)
- Blind Spot Monitor® with Rear Cross-Traffic Alert
- Lexus Safety System+ 2.5
- Vehicle Dynamic Integrated Management system (VDIM)
- Intuitive Parking Assist with Auto Braking optional
- Direct Tire Pressure Monitor System
Infotainment5 std · 2 opt
- Wi-Fi, 4GB with up to 3-month trial
- Paddle shifters
- Remote with Amazon Alexa and Google Assistant compatibility with up to 3-year trial
- Safety Connect® with up to 3-year trial
- Service Connect® with up to 10-year trial
- Destination Assist with up to 3-year trial optional
- Dynamic Navigation with up to 3-year trial optional
Convenience3 std · 0 opt
- SmartAccess® with push-button Start/Stop
- Illuminated entry system
- Lexus Memory System for driver's seat, outside mirrors and steering wheel
Climate1 std · 0 opt
- Dual-zone climate control
Seating3 std · 0 opt
- Heated front seats
- NuLuxe®* interior trim
- Ten-way power-adjustable driver's seat (including lumbar). Eight-way power-adjustable front passenger's seat and 60/40-split fold-down rear seat.
Interior3 std · 1 opt
- Heated leather-trimmed steering wheel
- Power tilt-and-telescopic steering wheel
- Rear armrest with cupholders
- Power rear sunshade optional
Exterior6 std · 3 opt
- Power tilt-and-slide moonroof optional
- Bi-LED headlamps with daytime running lamps
- F SPORT 19-in split-five-spoke alloy wheels with Dark Metallic finish
- F SPORT exhaust tips
- F SPORT exterior styling, including unique front and rear bumpers, grille surround, rocker moldings, rear spoiler and rear valance
- LED taillamps
- Rain-sensing windshield wipers
- Outside mirrors with auto tilt-down in reverse optional
- Triple-Beam LED headlamps optional
Powertrain1 std · 0 opt
- Drive Mode Select with Normal and Sport modes
Chassis1 std · 0 opt
- Electronic parking brake
Ranked by what shoppers ask about first; standard equipment before options.
Transcribed from the manufacturer's official press kit for the 2025 IS. Confirm with the window sticker for a specific unit.
The cheapest ownership win
Insurers price the 2025 IS very differently, and the gap between the best and worst quote on the same car and driver is usually larger than any option you are weighing on this page.
How to compare cover →Affiliate disclosure: some links on this page are affiliate links. If you request a quote or buy through them we may earn a commission at no extra cost to you. Nothing on this page changes because of it.
Common questions about the IS 350
Source: EPA, NHTSA and manufacturer press kitsWhat does the 2025 Lexus IS IS 350 add over the IS 300?
Against the IS 300, 10 features become standard that the IS 300 does not and 14 published specifications differ. Both lists are on this page, taken from the manufacturer's own press material.