Compare the2026 Lexus IS VS 2026 BMW 3 Series Sedan

For enhanced safety, the front and rear seat shoulder belts of the Lexus IS have pretensioners to tighten the seatbelts and eliminate dangerous slack in the event of a collision and force limiters to limit the pressure the belts will exert on the passengers. The BMW 3 Series Sedan doesn’t offer pretensioners for its rear seat belts.

For enhanced safety, the front seat shoulder belts of the Lexus IS are height-adjustable to accommodate a wide variety of driver and passenger heights. A better fit can prevent injuries and the increased comfort also encourages passengers to buckle up. The BMW 3 Series Sedan doesn’t offer height-adjustable seat belts.

The IS has a standard blind spot warning system that uses sensors to alert the driver to objects in the vehicle’s blind spots where the side view mirrors don’t reveal them. A system to reveal vehicles in the 3 Series Sedan’s blind spot costs extra.

To help make backing out of a parking space safer, the IS has standard Rear Cross-Traffic Alert to warn the driver of approaching traffic and automatically engage the brakes to help avoid a collision. BMW charges extra for Cross Traffic Warning on the 3 Series Sedan and the 3 Series Sedan’s Cross Traffic Warning does not include automatic braking.

Both the IS and the 3 Series Sedan have standard driver and passenger frontal airbags, front side-impact airbags, driver and front passenger knee airbags, side-impact head airbags, four-wheel antilock brakes, traction control, electronic stability systems to prevent skidding, crash mitigating brakes, post-collision automatic braking systems, daytime running lights, lane departure warning systems, rearview cameras, available all-wheel drive and around view monitors.

The National Highway Traffic Safety Administration does side impact tests on new vehicles. In this test, which crashes the vehicle into a flat barrier at 38.5 MPH and into a post at 20 MPH, results indicate that the Lexus IS is safer than the BMW 3 Series Sedan:

	IS	3 Series Sedan
	Rear Seat
STARS	5 Stars	5 Stars
HIC	162	305
Spine Acceleration	28 G’s	47 G’s
Hip Force	438 lbs.	532 lbs.
	Into Pole
STARS	5 Stars	5 Stars
Spine Acceleration	34 G’s	39 G’s

New test not comparable to pre-2011 test results. More stars = Better. Lower test results = Better.

Lexus’ powertrain warranty covers the IS 2 years and 20,000 miles longer than BMW covers the 3 Series Sedan. Any repair needed on the engine, transmission, axles, joints or driveshafts is fully covered for 6 years or 70,000 miles. Coverage on the 3 Series Sedan ends after only 4 years or 50,000 miles.

A reliable vehicle saves its owner time, money and trouble. Nobody wants to be stranded or have to be without a vehicle while it’s being repaired. Consumer Reports rates the IS’ reliability 28 points higher than the 3 Series Sedan.

J.D. Power and Associates rated the IS first among compact premium cars in their 2025 Initial Quality Study. The 3 Series Sedan isn’t in the top three.

J.D. Power and Associates’ 2025 Initial Quality Study of new car owners surveyed provide the statistics that show that Lexus vehicles are better in initial quality than BMW vehicles. J.D. Power ranks Lexus first in initial quality, above the industry average. With 30 more problems per 100 vehicles, BMW is ranked 14th, below the industry average.

J.D. Power and Associates’ 2025 survey of the owners of three-year-old vehicles provides the statistics that show that Lexus vehicles are more reliable than BMW vehicles. J.D. Power ranks Lexus first in reliability, above the industry average. With 49 more problems per 100 vehicles, BMW is ranked 9th.

From surveys of all its subscribers, Consumer Reports’ March 2026 Auto Issue reports that Lexus vehicles are more reliable than BMW vehicles. Consumer Reports ranks Lexus third in overall reliability. BMW is ranked fifth.

The IS’ 3.5 DOHC V6 produces 56 more horsepower (311 vs. 255) than the 330i’s standard 2.0 turbo 4-cylinder hybrid.

The IS has 1.8 gallons more fuel capacity than the 3 Series Sedan (17.4 vs. 15.6 gallons), for longer range between fill-ups.

The IS stops much shorter than the 3 Series Sedan:

	IS	3 Series Sedan
70 to 0 MPH	155 feet	165 feet	Car and Driver
60 to 0 MPH	110 feet	114 feet	Motor Trend

For better traction, the IS has larger standard tires than the 3 Series Sedan (235/40R19 vs. 225/45R18). The IS F Sport’s tires are larger than the largest tires available on the 3 Series Sedan (F:235/40R19 & R:265/35R19 vs. F:225/40R19 & R:255/35R19).

The IS’ standard tires provide better handling because they have a lower 40 series profile (height to width ratio) that provides a stiffer sidewall than the 330i’s standard 45 series tires.

For better ride, handling and brake cooling the IS has standard 19-inch wheels. Smaller 18-inch wheels are standard on the 330i.

For better handling and stability, the track (width between the wheels) on the IS is 1.5 inches wider in the rear than on the 3 Series Sedan.

The IS 350 F Sport handles at .93 G’s, while the 330i xDrive pulls only .91 G’s of cornering force in a Motor Trend skidpad test.

The IS 350 F Sport executes Motor Trend’s “Figure Eight” maneuver 1.2 seconds quicker than the 330i xDrive (25.4 seconds @ .71 average G’s vs. 26.6 seconds @ .66 average G’s).

For better maneuverability, the IS’ turning circle is 3.2 feet tighter than the 3 Series Sedan’s (34.2 feet vs. 37.4 feet). The IS AWD’s turning circle is 4 feet tighter than the 3 Series Sedan xDrive’s (35.4 feet vs. 39.4 feet).

J.D. Power and Associates surveys of service recipients show that Lexus service is better than BMW. J.D. Power ranks Lexus second in service department satisfaction. With a 24% lower rating, BMW is ranked 10th.

The IS’ optional easy entry system raises the steering wheel and glides the driver’s seat back when the door is unlocked or the ignition is switched off, making it easier for the driver to get in and out. The 3 Series Sedan doesn’t offer an easy entry system.

The IS’ instruments include an oil pressure gauge and a temperature gauge - which could save your engine! Often ‘idiot lights’ don’t warn you until damage has been done. The 3 Series Sedan does not have an oil pressure gauge.

In poor weather, headlights can lose their effectiveness as grime builds up on their lenses. This can reduce visibility without the driver realizing. The IS has standard headlight washers to keep headlight output high. The 3 Series Sedan doesn’t offer headlight washers.

A power rear sunshade is optional in the IS (except F Sport Design) to help block heat and glare for the rear passengers. The 3 Series Sedan doesn’t offer a rear sunshade.

Optional air-conditioned seats in the IS keep the driver and front passenger comfortable and take the sting out of hot seats in Summer. The 3 Series Sedan doesn’t offer air-conditioned seats.

According to iSeeCars.com the 2026 Lexus IS retains 60.76% of its original value after 5 years, significantly more than the 48.57% resale value of the 2026 BMW 3 Series Sedan after five years, which can save the Lexus’ owner up to $7357 in depreciation.

According to The Car Book by Jack Gillis, the IS is less expensive to operate than the 3 Series Sedan because it costs $190 less to do the manufacturer’s suggested maintenance for 50,000 miles. Typical repairs cost much less on the IS than the 3 Series Sedan, including $213 less for a water pump, $468 less for a muffler, $105 less for front brake pads and $237 less for front struts.

Consumer Reports® recommends both the Lexus IS and the BMW 3 Series Sedan, based on reliability, safety and performance.