For enhanced safety, the front and rear seat shoulder belts of the Mercedes C Class 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 Lexus GS Series has only front height-adjustable seat belts.
Both the C Class and the GS Series have standard driver and passenger frontal airbags, front side-impact airbags, head airbags, front and rear seatbelt pretensioners, height adjustable front shoulder belts, plastic fuel tanks, four wheel antilock brakes, traction control, electronic stability systems to prevent skidding and available all wheel drive.
The Insurance Institute for Highway Safety rates the general design of front seat head restraints for their ability to protect front seat occupants from whiplash injuries. The IIHS also performs a dynamic test on those seats with “good” or “acceptable” geometry. In these ratings, the C Class is safer then the GS Series:
C Class |
GS Series |
|
Overall Evaluation |
GOOD |
MARGINAL |
Head Restraint Design |
GOOD |
ACCEPTABLE |
Distance from Back of Head |
41 mm |
68 mm |
Distance Below Top of Head |
38 mm |
62 mm |
Dynamic Test Rating |
GOOD |
MARGINAL |
Seat Design |
Pass |
Fail |
Torso Acceleration |
11.7 g’s |
13.9 g’s |
Neck Force Rating |
Low |
Medium |
Max Neck Shearing Force |
34 |
116 |
Max Neck Tension |
453 |
1044 |
(Lower numerical results are better in all tests.)
For its top level performance in frontal, side, rear impact and roof-crush tests, and its standard Electronic Stability Program, the Insurance Institute for Highway Safety rates the C Class as a “Top Pick” for 2010, a rating only granted to 26 vehicles tested by the IIHS. The GS Series was not a “Top Pick.”
There are over 58 percent more Mercedes dealers than there are Lexus dealers, which makes it much easier to get service under the C Class’ warranty.
For more instantaneous acceleration and better engine flexibility in any gear, the C Class’ engines produce their peak torque at lower RPM’s than the GS Series:
Torque |
|
C300 3.0 DOHC V6 |
2700 RPM |
C350 3.5 DOHC V6 |
2400 RPM |
GS350 3.5 DOHC V6 |
3600 RPM |
GS460 4.6 DOHC V8 |
3600 RPM |
The C Class’ brakes have 14% more swept area (the area covered by the brake pads) than the GS Series (537 vs. 473 square inches), so the C Class has more braking power available.
The C Class stops much shorter than the GS Series:
C Class |
GS Series |
||
70 to 0 MPH |
170 feet |
182 feet |
Car and Driver |
60 to 0 MPH |
117 feet |
129 feet |
Motor Trend |
60 to 0 MPH (Wet) |
138 feet |
147 feet |
Consumer Reports |
The C Class’ standard tires provide better handling because they have a lower 45 series profile (height to width ratio) that provides a stiffer sidewall than the GS350’s standard 50 series tires. The C Class Sport’s optional 255/35R18 rear tires have a lower 35 series profile than the GS460/450h’s 40 series tires.
The C350 handles at .87 G’s, while the GS350 AWD pulls only .81 G’s of cornering force in a Motor Trend skidpad test.
The C350 goes through Road & Track’s slalom 3.1 MPH faster than the GS450h (63.8 vs. 60.7 MPH).
The C350 executes Motor Trend’s “Figure Eight” maneuver quicker than the GS460 (26.5 seconds @ .6 average G’s vs. 27 seconds @ .65 average G’s).
For better maneuverability, the C Class’ turning circle is tighter than the GS Series’:
C Class |
GS Series |
|
Sedan |
35.5 feet |
36.7 feet |
AWD Sedan |
35.5 feet |
36.7 feet |
The Mercedes C Class may be more efficient, handle and accelerate better because it weighs about 250 to 400 pounds less than the Lexus GS Series.
The C Class is 8.4 inches shorter than the GS Series, making the C Class easier to handle, maneuver and park in tight spaces.
The C Class’ optional rear seats fold to accommodate long and bulky cargo. The GS Series doesn’t offer folding rear seats, only a ski pass-through.
The power windows standard on both the C Class and the GS Series have locks to prevent small children from operating them. When the lock on the C Class is engaged the driver can still operate all of the windows, for instance to close one opened by a child. The GS Series prevents the driver from operating the other windows just as it does the other passengers.
The C Class’ standard power mirror controls are mounted on the armrest for easy access. The GS Series’ standard power mirror controls are on the dash, hidden behind the steering wheel, where they are awkward to manipulate.
Insurance will cost less for the C Class owner. The Complete Car Cost Guide estimates that insurance for the C Class will cost $833 less than the GS Series over a five-year period.
According to The Car Book by Jack Gillis, the C Class is less expensive to operate than the GS Series because it costs $154 less to do the manufacturer’s suggested maintenance for 50,000 miles. Typical repairs cost less on the C Class than the GS Series, including $55 less for a water pump, $107 less for fuel injection, $123 less for a fuel pump, $64 less for front struts and $3 less for a timing belt/chain.
© 1991-2016 Advanta-STAR Automotive Research. All rights reserved.
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