2026 Lexus IS
midsize luxury car / 4-door sedan
Moderate overlap front: updated test
Tested vehicle: 2026 Lexus IS 350 F Sport 4-door
Rating applies to 2026 models
The Lexus IS was redesigned for the 2014 model year. Beginning with 2026 models, changes were made to the front driver seat belt load limiter to improve driver occupant safety in moderate overlap front crashes.
| Evaluation criteria | Rating |
|---|---|
| Overall evaluation | |
| Structure and safety cage | |
| Driver injury measures | |
| Head/neck | |
| Chest | |
| Thigh/hip | |
| Leg/foot | |
| Driver restraints and dummy kinematics | |
| Rear passenger injury measures | |
| Head/neck | |
| Chest | |
| Thigh | |
|
Rear passenger restraints and dummy kinematics
| |
Technical measurements for this test
Measures of occupant compartment intrusion on driver side
| Evaluation criteria | Measurement |
|---|---|
| Test ID | CEF2618 |
| Footwell intrusion | |
| Footrest (cm) | 9 |
| Left (cm) | 9 |
| Center (cm) | 10 |
| Right (cm) | 5 |
| Brake pedal (cm) | 7 |
| Instrument panel rearward movement | |
| Left (cm) | 2 |
| Right (cm) | 1 |
| Steering column movement | |
| Upward (cm) | 1 |
| Rearward (cm) | -1 |
| A-pillar rearward movement (cm) | 0 |
Driver injury measures
| Evaluation criteria | Measurement |
|---|---|
| Test ID | CEF2618 |
| Head | |
| HIC-15 | 188 |
| Peak gs at hard contact | no contact |
| Neck | |
| Tension (kN) | 1.6 |
| Extension bending moment (Nm) | 8 |
| Maximum Nij | 0.27 |
| Chest maximum compression (mm) | 33 |
| Femur (kN) | |
| Left | 1.9 |
| Right | 2.0 |
| Knee displacement (mm) | |
| Left | 2 |
| Right | 4 |
| Knee-thigh-hip injury risk (%) | |
| Left | 0 |
| Right | 0 |
| Maximum tibia index | |
| Left | 0.47 |
| Right | 0.40 |
| Tibia axial force (kN) | |
| Left | 2.4 |
| Right | 2.9 |
| Foot acceleration (g) | |
| Left | 66 |
| Right | 46 |
Rear passenger injury measures
| Test ID | CEF2618 |
|---|---|
| Head | |
| HIC-15 for head contact during forward excursion | no contact |
| Peak gs at hard contact | no contact |
| Neck | |
| Tension (kN) | 2.2 |
| Compression (kN) | 0.3 |
| Maximum Nij for head contact during forward excursion | no contact |
| Chest | |
| Chest index | 36 |
| Shoulder belt tension (kN) | 6.5 |
| Thigh (kN) | |
| Left femur compression | 0.1 |
| Right femur compression | 0.1 |
Headlights
Ratings are given for 2 different headlight variations available on this vehicle.
(1) Trim level(s): 350 trim
| Evaluation criteria | Rating |
|---|---|
| Low-beam headlight type | LED projector |
| High-beam headlight type | LED projector |
| Curve-adaptive? | No |
| High-beam assist? | Yes |
|
Overall rating | |
| Distance at which headlights provide at least 5 lux illumination: | |
Low beams
On the straightaway, visibility was good on both sides of the road. On curves, visibility was good on the gradual right and gradual left curves and fair on the sharp right and sharp left curves.
The low beams never exceeded glare limits.
High beams
On the straightaway, visibility was good on both sides of the road. On curves, visibility was fair on the gradual left and gradual right curves and inadequate on the sharp right and sharp left curves.
High-beam assist compensates for some limitations of this vehicle's low beams on both left curves and on both right curves.
Technical measurements for this test
| Evaluation criteria | Measurement |
|---|---|
| Trim level(s) |
|
| Low-beam headlight type | LED projector |
| High-beam headlight type | LED projector |
| Curve-adaptive? | No |
| High-beam assist? | Yes |
|
Overall rating Applies to 2021-26 models |
| LOW BEAMS | Average minimum useful illumination distance (5 lux) |
Amount glare exceeded threshold |
|---|---|---|
| Straightaway right edge | 141.5 m | None |
| Straightaway left edge | 78.0 m | None |
| 250m radius right curve, right edge | 68.5 m | None |
| 250m radius left curve, left edge | 66.0 m | None |
| 150m radius right curve, right edge | 53.0 m | None |
| 150m radius left curve, left edge | 51.2 m | None |
| HIGH BEAMS | Average minimum useful illumination distance (5 lux) |
|---|---|
| Straightaway right edge | 149.2 m |
| Straightaway left edge | 145.3 m |
| 250m radius right curve, right edge | 68.9 m |
| 250m radius left curve, left edge | 69.5 m |
| 150m radius right curve, right edge | 53.6 m |
| 150m radius left curve, left edge | 52.1 m |
(2) Trim level(s): 350 trim equipped with Premium Triple-Beam LED Headlamps package
| Evaluation criteria | Rating |
|---|---|
| Low-beam headlight type | LED projector |
| High-beam headlight type | LED projector |
| Curve-adaptive? | No |
| High-beam assist? | Yes |
|
Overall rating | |
| Distance at which headlights provide at least 5 lux illumination: | |
Low beams
On the straightaway, visibility was fair on both sides of the road. On curves, visibility was good on both right curves, fair on the sharp left curve and inadequate on the gradual left curve.
The low beams never exceeded glare limits.
High beams
On the straightaway, visibility was good on both sides of the road. On curves, visibility was good on the gradual left and gradual right curves and fair on the sharp right and sharp left curves.
High-beam assist compensates for some limitations of this vehicle's low beams on the straightaway and on both left curves.
Technical measurements for this test
| Evaluation criteria | Measurement |
|---|---|
| Trim level(s) |
|
| Low-beam headlight type | LED projector |
| High-beam headlight type | LED projector |
| Curve-adaptive? | No |
| High-beam assist? | Yes |
|
Overall rating Applies to 2021-26 models |
| LOW BEAMS | Average minimum useful illumination distance (5 lux) |
Amount glare exceeded threshold |
|---|---|---|
| Straightaway right edge | 85.2 m | None |
| Straightaway left edge | 48.0 m | None |
| 250m radius right curve, right edge | 73.5 m | None |
| 250m radius left curve, right edge | 42.1 m | None |
| 150m radius right curve, right edge | 60.1 m | None |
| 150m radius left curve, left edge | 47.8 m | None |
| HIGH BEAMS | Average minimum useful illumination distance (5 lux) |
|---|---|
| Straightaway right edge | 154.5 m |
| Straightaway left edge | 151.5 m |
| 250m radius right curve, right edge | 77.6 m |
| 250m radius left curve, left edge | 79.6 m |
| 150m radius right curve, right edge | 60.5 m |
| 150m radius left curve, left edge | 59.6 m |
Front crash prevention: vehicle-to-vehicle 2.0
Front crash prevention: pedestrian
Seat belt reminders
Rating applies to 2026 models
| Evaluation criteria | Rating |
|---|---|
| Overall evaluation | |
| Front row | |
| Unbelted occupant alert (audible & visual) | |
| Initiation time | |
| Duration | Long enough (90+ seconds) |
| Volume | |
| Audio frequency | |
| Second row | |
| Startup status alert (visual) | |
| Initiation time | |
| Duration at least 60 seconds | |
| Belt disengaged alert (audible & visual) | |
| Initiation time | |
| Duration at least 30 seconds | |
| Volume | |
| Audio frequency | |
Technical measurements for this test
| Evaluation criteria | Measurement |
|---|---|
| Background cabin sound pressure level at 24 km/h | 51 dB |
| Audible signal sound pressure level at 24 km/h | 69 dB |
| Difference between background and signal | 18.0 dB |
| Background cabin sound pressure level at 40 km/h | 55 dB |
| Audible signal sound pressure level at 40 km/h | 70 dB |
| Difference between background and signal | 14.7 dB |
| Dominant audio frequency | 656 Hz |
Child seat anchors
Rating applies to 2017-26 models
| Evaluation criteria | Rating |
|---|---|
| Overall evaluation | |
| Vehicle trim | IS 300 |
| Seat type | leather |
This vehicle has 2 rear seating positions with complete child seat attachment (LATCH) hardware. It has 1 additional seating position with a tether anchor only.
| Rating icon | Rating |
|---|---|
| G | Good |
| A | Acceptable |
| M | Marginal |
| P | Poor |
| Seating positions that rely on borrowed lower anchors or have only a tether anchor available are not rated. | |
thether anchor symbol | Tether anchor |
lower anchor symbol | Lower anchors |
| Lower anchor(s) can be borrowed from adjacent positions(s) | |
| No hardware available |
Details by seating position
| Position | Rating |
|---|---|
| 1 | |
| Tether anchor | |
| easy-to-find location | |
| no other hardware could be confused for anchor | |
| Lower anchors | |
| not too deep in seat | |
| not too much force needed to attach | |
| easy to maneuver around anchors | |
| 2 | |
| Tether anchor | |
| easy-to-find location | |
| no other hardware could be confused for anchor | |
| Lower anchors | |
| none available | |
| 3 | |
| Tether anchor | |
| easy-to-find location | |
| no other hardware could be confused for anchor | |
| Lower anchors | |
| not too deep in seat | |
| not too much force needed to attach | |
| easy to maneuver around anchors |
Technical measurements for this test
Seat position 21
| Lower anchor A | |
|---|---|
| Open access rated | Yes |
| Depth | Visible |
| Force (lbs) | 0 |
| Clearance angle (degrees) | 66 |
| Lower anchor B | |
| Open access rated | Yes |
| Depth | Visible |
| Force (lbs) | 0 |
| Clearance angle (degrees) | 69 |
| Tether anchor | |
| Location | Rear deck |
| Confusing hardware present | No |
| Has contrasting label within 3 inches of tether anchor |
Yes |
| Tether anchors can be accessed while seatback is properly positioned for use of LATCH |
Not measured |
Seat position 22
| Lower anchor A | |
|---|---|
| No lower latch for this seat position | |
| Lower anchor B | |
| No lower latch for this seat position | |
| Tether anchor | |
| Location | Rear deck |
| Confusing hardware present | No |
| Has contrasting label within 3 inches of tether anchor |
Yes |
| Tether anchors can be accessed while seatback is properly positioned for use of LATCH |
Not measured |
Seat position 23
| Lower anchor A | |
|---|---|
| Open access rated | Yes |
| Depth | Visible |
| Force (lbs) | 0 |
| Clearance angle (degrees) | 61 |
| Lower anchor B | |
| Open access rated | Yes |
| Depth | Visible |
| Force (lbs) | 0 |
| Clearance angle (degrees) | 65 |
| Tether anchor | |
| Location | Rear deck |
| Confusing hardware present | No |
| Has contrasting label within 3 inches of tether anchor |
Yes |
| Tether anchors can be accessed while seatback is properly positioned for use of LATCH |
Not measured |