Model Year | 2017 | 2017 | 2016 | 2016 |
Model | RLX | RLX | A4 / S4 | A4 / S4 |
Trim | P-AWS | Sport Hybrid SH-AWD | A4 2.0T | S4 3.0T |
Engines | ||||
Transmissions | ||||
Drivetrains | ||||
Tires | ||||
Audio Systems | ||||
Accessories | ||||
Cancels out interior noise by playing the opposite noise through the vehicle's speakers. | ||||
Automatically maintains set distance behind preceding vehicle as well as set speed. Minimum speed around 30 mph. Replaces regular cruise control, and includes its value. | ||||
Automatically maintains set distance behind preceding vehicle as well as set speed. Can bring vehicle to a complete stop then accelerate back up to set speed. Replaces regular adaptive cruise control, and includes its value. | ||||
Accelerator presses back when system detects an inefficient excess of acceleration, to train the driver to drive more efficiently. Can be turned off. | ||||
Often must be ordered with power rear side windows, if these are available. | ||||
Enter and start the vehicle without removing the key from your pocket. | ||||
Check on car and remotely control various functions (remote start, locks, lights, and/or HVAC) from a telephone or computer. Can require a monthly fee. | ||||
Unlock and lock the car using buttons on the keyfob. | ||||
Start the car using a button on the keyfob. Interior can be a comfortable temperature as soon as you get in. | ||||
Operate the power windows, sunroof, and/or convertible roof using buttons on the keyfob. | ||||
Greatly reduces the amount of sunlight entering the rear window. Includes the value of manual rear shade. | ||||
Greatly reduce the amount of sunlight entering the rear side windows. Retract into rear doors. | ||||
Homelink. | ||||
Brakes, Airbags, and Other Safety | ||||
Rear disc brakes. | ||||
If active, automatically move forward when the vehicle is rear-ended. Note: becoming less common. | ||||
Only listed when pricing a single model because insufficient data for all cars. | ||||
Automatically pulse the brakes in hard stops to prevent wheels from locking up, making it possible to brake and steer at the same time. | ||||
Small external cameras provide a top-down view all around the vehicle, to reduce blind spots while parking. | ||||
If collision detection system senses imminent collision, applies moderate braking. | ||||
Automatically brakes car to avoid low-speed collisions. | ||||
Mirror-mounted lights indicate when another vehicle is in a blind spot. | ||||
When a panic stop is sensed, fully applies the brakes. | ||||
Warns of traffic coming from either direction when vehicle is in reverse, to prevent accidents when backing out of parking spaces. | ||||
Applies the brakes to a slipping drive wheel to transfer torque to the other side, simulating the effect of a limited-slip differential. We haven't identified all applications, often implied by traction control. | ||||
Alerts driver when approaching the preceding car too quickly. | ||||
Mandatory, in all cars. | ||||
Alerts driver when the vehicle seems to be wandering out of the lane. | ||||
Proactively helps keep the car centered inside a detected lane via steering assistance. | ||||
Beeps signal distance to object in front of vehicle. Parking aid. | ||||
Beeps signal distance to object behind vehicle. Parking aid. | ||||
Warns driver of pedestrians in path of car. | ||||
Prepares brakes (and sometimes also seat belts) for use when radar detects an imminent collision. Might also move seats and close windows. Early Lexus system used laser. Since automatic braking became common it has been unclear which models have this feat | ||||
Torso-level second row airbags, usually contained in the rear door. Some also protect the head, but not as well as side curtain airbags. | ||||
Rearview camera connected to display screen on the instrument panel. Often requires navigation system. | ||||
Deploys extended duration side curtain airbags when the vehicle rolls over. Usually included on tall vehicles. Rare on others. | ||||
Airbags contained just above the window level. Except in cars without a rear seat usually cover first and second row. | ||||
Selectively applies the brakes to prevent excessive understeer or oversteer (spinning). | ||||
Two types: a warning light when a tire is low on air and a pressure readout for each tire. | ||||
Uses the brakes to channel torque to the outside wheels and counteract understeer. Similar to stability control, but proactive, and acting to improve cornering performance rather than prevent loss of control. | ||||
When a drive wheel slips, it is braked and/or engine power is reduced, restoring traction. | ||||
Wide angle camera allows the driver to see well to each side from the very rear of the car when pulling out of parking spaces or side streets. A second selectable view. | ||||
Cargo Management | ||||
Usually concealed behind a stowed armrest. Enables long items like skis to be carried without folding the rear seat. | ||||
Climate Control | ||||
Automatically recirculates interior air when pollution is detected in outside air. | ||||
Maintains set temperature in front row. Requires air conditioning and does not include its value. | ||||
Temperature can be separately set for left and right sides of the passenger compartment. Requires air conditioning and does not include its value. | ||||
Filters exterior air before it enters the passenger compartment. No default value because most cars have them, even in cases where they're not in the official list of features. | ||||
Wipers automatically turn on and adjust their speed based on input from a rain sensor. | ||||
Maintains set temperature in rear passenger area by providing heated or cooled air through vents in the center console, B-pillars, and/or ceiling. Replaces and includes value of rear air vents with manual controls. | ||||
Ducts under front seats direct heated air to the second row. | ||||
Drivetrain | ||||
Actively splits power between the left and right rear wheels, which generally yields sportier handling. | ||||
Selectively applies postive or negative torque to the wheels to counteract understeer and help rotate the car through a turn. | ||||
Engine / Motor | ||||
Only listed if not standard on all trims. No value because no way to compare across models. | ||||
Exterior | ||||
Side skirts and possibly a front air dam and rear apron. | ||||
Increasingly often these are not actually connected to the exhaust. | ||||
Chrome or aluminum mirrors. Only listed if optional or not standard on the base trim. | ||||
Reduces interior noise, prevents side windows from shattering. | ||||
Reduces interior noise, prevents side windows from shattering. | ||||
Can be small lip spoiler or a larger raised spoiler. | ||||
Only listed if not standard on all trims. No value because no way to compare across models. | ||||
Infotainment | ||||
Touchscreen and/or voice control over apps that can include online search, Facebook, Twitter, Pandora, OpenTable, and MovieTickets.com. Requires connected compatible phone. Fees may apply after first three years. | ||||
Jack for an iPod or similar device. No value because of incomplete data. Will soon be standard on nearly every car. | ||||
Uses Bluetooth rather than a cable to integrate audio device. Requires compatible audio device and/or phone. | ||||
Enables hands-free communication by wirelessly connecting a cell phone to a microphone and the vehicle's stereo speakers. | ||||
Audio system capable of playing DVD-Audio discs. | ||||
Audio system capable of playing DVDs on a front-row screen. Inoperative when the vehicle is moving. No value because of incomplete data. | ||||
High-definition radio, which broadcasts a digital signal. Free, no subscription fees. | ||||
Connects car to the Internet to update systems, download information, and/or browse. Includes internal modem, usually requires car-specific broadband service with monthly fee. | ||||
Integrates an iPod with the vehicle's controls and speakers. Usually included if there is a USB port, but can also rely on a proprietary port. | ||||
Built-in drive with at least 10 GB of storage for MP3 and other audio files. | ||||
Audio system capable of playing discs with MP3 files. | ||||
Screen-based navigation system. | ||||
XM or Sirius. Includes a subscription for three to six months, after which monthly fees apply. | ||||
SD, CF, PCMCIA, or other digital media reader. | ||||
Converts text messages to speech. | ||||
In-vehicle security, communications, and diagnostics system. For 2011 and newer cars often includes a remote app. Monthly fee after the first 1-12 months. | ||||
Information about traffic plus weather, gas prices, sports news, and/or movie times. Monthly fee after first 3-12 months. | ||||
Often permits an iPod or phone to be integrated into the vehicle's entertainment system and controls. | ||||
Sometimes also includes voice control over climate control system. | ||||
Provides Wi-Fi within the car. Includes internal modem, usually requires car-specific broadband service with monthly fee. | ||||
Instruments, Lights, and Mirrors | ||||
Driver-side exterior mirror automatically dims when hit by headlights of following vehicle. | ||||
Passenger-side rearview mirror automatically dims when hit by headlights of following vehicle. | ||||
Interior rearview mirror automatically dims when hit by headlights of following vehicle. | ||||
Headlights automatically turn on and off. Includes value of automatic-off headlights. | ||||
We haven't given this feature a value because it's hard to tell which cars have it. | ||||
Lights illuminate area just ahead and to the side of the vehicle when the turn signals are used or the steering wheel is turned. | ||||
Make it easier for following vehicles to see the vehicle in fog. | ||||
Light wide area close in front of the vehicle. | ||||
Projects various instrument readouts onto the windshield. Image actually appears to be floating over the nose of the car. Enables driver to keep eyes on the road. | ||||
Clears ice and fog from mirrors. | ||||
Includes value of non-illuminated vanity mirror. | ||||
Includes value of non-illuminated vanity mirror. | ||||
LEDs cast a soft glow over and/or highlight parts of the interior. | ||||
LED headlights last longer and use less energy than other types. | ||||
Only listed if not standard on all trims. No value because no way to compare across models. | ||||
Front row reading lights. | ||||
One or both exterior mirrors tilt down when the transmission is in reverse, to provide view of the curb. | ||||
Area around the vehicle is illuminated when the vehicle is remotely unlocked. | ||||
Includes value of manual remote mirrors. | ||||
Mirrors fold and unfold with the touch of a button inside the vehicle. Good for narrow roads and parking lots. | ||||
Auxiliary convex lens in the corner of the outside mirror that improves view of the driver's blind spot. | ||||
Headlights swivel when steering wheel is turned. | ||||
Reports engine speed. | ||||
Reports average fuel economy, and perhaps also instantaneous fuel economy, distance to empty, average speed, and other stats. | ||||
Provide a brighter, whiter light than halogen headlights. | ||||
Seats and Interior Trim | ||||
Real aluminum trim on instrument panel, door panels, and/or center console. Deleted by wood trim even if they appear together. | ||||
Won't be listed in conjunction with wood or aluminum trim even if they are available together. | ||||
Only listed if not standard on all trims. No value because no way to compare across models. | ||||
Seat folds to enlarge cargo area. Unless the seat is also removable, it usually folds flat or nearly flat. | ||||
Seating surfaces are trimmed in leather; other upholstery tends to be leatherette. | ||||
Leather beyond the seating surfaces, door panels, and IP top. No additional value over leather upholstery because no way to standardize across all models. | ||||
Manually adjustable cushion length; provides better support for long legs. | ||||
Manually adjustable cushion length; provides better support for long legs. | ||||
Lower back support power-adjustable vertically as well as in and out. | ||||
Lower back support power-adjustable vertically as well as in and out. | ||||
Power tilting seat cushion; can take the form of a second height adjustment. | ||||
Power tilting seat cushion; can take the form of a second height adjustment. | ||||
Seating surfaces are part leather, part synthetic suede. | ||||
No additional value over leather upholstery because no way to standardize across all models. | ||||
Real wood trim on instrument panel, door panels, and/or center console. | ||||
Real wood trim on instrument panel, door panels, and/or center console. | ||||
Suspension, Wheels, and Tires | ||||
The steering ratio is automatically varied based on vehicle speed and other factors. | ||||
Shocks that electrically adjust their firmness based on sensor readings of the road surface. The driver might also be able to select a \"sport\" setting. | ||||
Shocks mechanically adjust firmness based on direct road inputs. Not driver adjustable. | ||||
Varies throttle, steering, ABS, and/or stability control calibration. | ||||
The rear wheels steer to improve steering responsiveness at high speeds and reduce the turning circle at low speeds. | ||||
Only listed if not standard on all trims. No value because no way to compare across models. | ||||
Transmission | ||||
Electronically controls engine and transmission for perfect launch. | ||||
Paddles or buttons that can be used to manually shift the transmission. Only listed when optional or not always included with an automatic transmission. |
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