Smart Roadster And Roadster Coupe | Part Three

Smart Roadster Interior


Passive Safety: Sophisticated Safety Concept

The safety concept of the smart roadster and smart roadster-coupé is of a high standard comparable to that of the smart city-coupé and smart cabrio. The passive safety concept of the two new cars is also based on the combination of the TRIDION safety cell and a specially defined restraint system consisting of two full-size airbags, belt tensioners and belt-force limiters. This allows controlled forward movement of the passengers wearing seat belts and is supplemented by a deformable steering column which effectively prevents intrusion of the steering wheel.

In addition to this passive safety is guaranteed by extremely sturdy seats. Their sheet-metal shell construction combined with the firm cushioning have a considerable protection potential, also in view of high energy. They reliably prevent the body from submarining under the lap belt in the event of frontal collisions and have also proved to be an effective protective shield in rear collisions. Side airbags can be fitted in the backrests as an option.

In addition to generously dimensioned side members in the luggage compartment floor, the roadster is armed against rear end collisions with an extremely strong frame-type integral support. This carries the whole drive unit and the DeDion rear axle construction. The 35 litre fuel tank between the passenger compartment and the rear axle is separated from the drive unit by a studded aluminium sheet; a profiled bulkhead shields it from the interior.

Deformation forces applied from the side meet with the solid cross members. One of them is positioned below the firewall and there are two further cross members in the centre of the passenger compartment. Strong side skirts and B-pillars reinforced with high-strength sheet metal also avert intrusions. Moreover, a bulkhead with stabilising swage lines is welded in between them. The wide, oval roll bar, which forms a structural and formal unit with the B-pillars, also makes a contribution to this.

The doors made of aluminium form a strong integrated unit with the bodyshell. They are connected by means of sturdy hinges and locks and can be easily opened with grab handles, even when deformed. A thick extruded aluminium section consisting of two chambers forms the horizontal connection between the A and B-pillars.

In the development of the cars great importance was attached to the consequences of a possible rollover. The cars comply with the demanding American standards and also with DaimlerChrysler AG’s own standards. The use of high-strength and extremely high-strength steel in the relevant areas gives the occupants a very high degree of safety in the event of such rare accidents, which can nonetheless be critical for open top cars. The roll bar forms a large-volume and therefore especially rigid box section. The A-pillars and roof frame are also made of extremely high-strength multichamber sections and in addition solid steel tubes are welded inside the A-pillars.

Smart Roadster / Smart Roadster-Coupé: Technical Data - Engine
Type Petrol engine
No. of cylinders/ Configuration Three in-line
Valves Two per cylinder
Cubic capacity (cm3) 698
Bore x stroke (mm) 66.5 x 67
Rated output (kW) Approx. 60 at 5,250 rpm
Max. torque (Nm) Aapprox. 110 at 3,000 rpm
Compression ratio 9.0 : 1
Carburetion Electric multipoint injection, electronic accelerator
Clutch Single-plate dry clutch  
Transmission Sequential automated Six-speed transmission  
Ratios Final drive 3,920/1,717
  1st gear 13,230
  2nd gear 9,604
  3rd gear 7,350
  4th gear 5,796
  5th gear 4,208
  6th gear 3,220
Running Gear
Front Axle W ishbone, McPherson strut, stabiliser
Rear Axle DeDion suspension tube with central mount, wishbone, coil springs, telescopic shock absorbers
Brake System Hydr. dual circuit system with vacuum booster, disk brakes at front, drum brakes at rear, electronic stability program ESP
Steering Rack-and-pinion steering, electric power steering (option)
Wheels Front/Rear 5J x 15 / 6J x 15 (smart roadster) 6J x 15 / 7J x 15 (smart roadster-coupé)
Tyres Front/Rear 185/55 R 15 (smart roadster) 205/50 R 15 (smart roadster-coupé)
Dimensions And Weights
Wheelbase (mm) 2,360
Track width front (mm) 1,357
Track width rear (mm) 1,392
Length (mm) 3,427
Width (mm) 1,615
Height (mm) 1,192
Turning circle (m) 10.7
Front luggage compartment (l) 59
Rear luggage compartment (l) 86 / 45 (smart roadster) 189 / 104 (smart roadster-coupé)
Weight without driver (kg) 790 (smart roadster) 815 (smart roadster-coupé)
Fuel tank capacity (l) 35
Acceleration 10.9 (smart roadster)
0-100 km/h (s) 11.2 (smart roadster-coupé)
Maximum speed approx. 175 km/h
Fuel consumption (100 km)
Combined less than 5.5
Emission class EU4
Published 29 August 2002 Melanie Carter

The information contained this smart news article may have changed since publication on the 29 August 2002. Our car specifications, reviews, and prices may only apply to the UK market. You may wish to check with the manufacturer or your local smart dealer, before making a purchasing decision. E.&.O.E. You may NOT reproduce our car news in full or part, in any format without our written permission. © 2018