The Mercedes-Benz GLK-Class Awarded TÜV Environmental Certificate
The specialists at the TÜV test organisation have once again recognised the company's commitment to environmental protection
by Chris Danielson | 02 March 2010
Spring 2009 sees the GLK receive not only a number of new items of equipment but also a special distinction: compact and distinctive, it is the first Mercedes-Benz SUV model family to receive the sought-after Environmental Certificate in accordance with ISO standard 14062. In awarding the certificate, the independent specialists at the TÜV test organisation have once again recognised the company’s commitment to environmental protection, as also laid down in the policy guidelines for the entire Daimler Group. These require the premium manufacturer to go much further than merely considering the environmental effects which a vehicle has while it is actually in use. Instead, the entire lifecycle from development through the production process and the use phase right up to disposal is examined and optimised. The Environmental Certificate is based on a complete life cycle assessment of the GLK which comprises some 40,000 separate processes. In addition to the GLK, the A, B, C and S-Class models have already been awarded the TÜV Süd Environmental Certificate.
The certification to ISO standard 14062 applies to all GLK models. The Mercedes-Benz GLK 220 CDI BlueEFFICIENCY was used as the basis for calculating a range of parameters including the energy requirement and emissions over a distance of 200,000 kilometres. The results for the compact SUV were extremely positive: it consumed just 6.7 litres of diesel per hundred kilometres (176 g CO2/km) and performed to a higher standard than that required by the EU 5 emission limits which come into force in September 2009. Factors optimised through the BlueEFFICIENCY strategy include aerodynamics, rolling resistance, vehicle weight and energy management. What’s more, all GLK models are also compatible with future fuels. They are already designed to meet the requirements of EU plans to increase the biofuel content. A bioethanol component of 10 percent (E10) is permissible for petrol engines while diesel engines are able to run without any reservation on fuel with a 10-percent biofuel component, comprising 7 percent biodiesel (B7 FAME) and 3 percent hydrogenated vegetable oil.
Design for Environment: environmental protection starts on the drawing board
The “Design for Environment” (DfE) concept was integrated in the complex development process for the GLKright from the start. Special DfE teams made up of engineers from a wide range of disciplines – such as life cycle assessment, dismantling and recycling planning, materials and process engineering, as well as design and production – ensured compliance with the defined environmental objectives. The integration of DfE in the product development process ensured that environmental aspects were considered from the very earliest stage of development. As Dr Herbert Kohler, Chief Environmental Officer of Daimler AG, points out: “The environmental quality of a vehicle is determined by more than its fuel consumption and CO2 emissions. It’s necessary to look at the entire life cycle from development through production and use to disposal. This is a striking example of Mercedes-Benz’s comprehensive commitment to the environment. The Environmental Certificate for the GLK confirms the success of our strategy in this important area.
Public access to the Environmental Certificate and a detailed presentation of it is available in the “Life Cycle” documentation series at www.mercedes-benz.com
Comprehensive environmental concept making consistent use of secondary and renewable raw materials
The GLK already meets the requirement for a 95-percent recoverability rate which is applicable from 01.01.2015. Even at the development stage, care was taken to ensure that certain thermoplastic components – such as bumpers, wheel arch linings, side member, underbody and engine compartment panels – could be segregated and disassembled easily. In the GLK, 30 components with a total weight of 41 kilograms contain a proportion of high-grade recycled plastics. These include wheel arch linings, cable ducts and underbody panelling. As far as possible, the secondary raw materials used are obtained from vehicle-related waste flows, one example being the front wheel arch linings which are made from recycled vehicle components.
A total of 27 components with a combined weight of 20.7 kilograms are made with renewable raw materials. These components are to be found principally in the interior of the GLK. The seat upholstery contains some 15 percent pure sheep’s wool. Olive coke is used in the activated charcoal filters which prevent hydrocarbon emissions resulting from fuel evaporation and are self-regenerating during vehicle operation.
New equipment features and model designations for the GLK
A number of new items of equipment are available for the distinctive, compact SUV. These include comfort and convenience features such as KEYLESS GO or – in combination with the COMAND APS multimedia system – a reversing camera with a display showing static guide lines to assist with manoeuvring. Inside the GLK, customers can now choose particularly hard-wearing yet also breathable ARTICO man-made leather. What’s more, the luxurious designo line is also available with two-tone leather appointments in a choice of black/light brown and black/corteccia.
Spring 2009 sees the GLK model designations change in accordance with the other Mercedes-Benz model lines. The two versions with a V6 petrol engine now have the model designations “GLK 300 4MATIC (formerly GLK 280 4MATIC) and GLK 350 4MATIC (unchanged) and, like the GLK 220 CDI 4MATIC with BlueEFFICIENCY technology, meet the requirements of the EU 5 standard which comes into force in September 2009. The second diesel version, the GLK 350 CDI 4MATIC (formerly GLK 320 CDI 4MATIC), complies with the EU 4 standard.
The GLK range at a glance:
|Model Emissions standard||Cyl.||cc||kW/hp at rpm||Nm at rpm||0 – 100 km/h (s)||km/h||l/100 km NEDC combined**|
|GLK 220 CDI 4MATIC Blue-EFFICIENCY EU 5||4/in-line||2143||125/170 3200-4800||400 1400-2800||8.8||205||6.7-6.9|
|GLK 350 CDI 4MATIC EU 4||V6||2987||165/224 3800||540 1600-2400||7.5||220||7.9-8.4|
|GLK 300 4MATIC EU 5||V6||2996||170/231 6000||300 2500-5000||7.6||210||10.2-10.5|
|GLK 350 4MATIC EU 5||V6||3498||200/272 6000||350 2400-5000||6.7||230||10.5-10.8|
* All models feature 7G-TRONIC seven-speed automatic transmission, ** depends on equipment