The 2012 Mercedes C Class price for the European market was just announced, with the facelift version scheduled to arrive in dealerships in March 2011.
The 2012 Mercedes C Class price starts at 32,695 Euro for the C 180 BlueEFFICIENCY which packs 156 HP (115 kW) while the Estate version will go on sale priced at 34,361 Euro.
The complete engine lineup available for the 2012 Mercedes C Class includes four petrol plants which pack 156 HP, 184 HP, 204 HP and 306 HP respectively, and five diesels rated between 120 and 231 HP, all of which have been optimized for a 31 percent reduction in fuel consumption.
All rear-wheel drive model 2012 Mercedes C Class will be offered with the ECO start/stop function as standard, plus all models have been enhanced with a total of 10 new driving assistance systems which include drowsiness detection and proximity control.  
The 2012 Mercedes C Class price includes the 19 percent value added tax, and for more specific details regarding the two equipment grades (ELEGANCE AND AVANTGARDE), check out the official press release below.
Daimler press release :
A striking and dynamic exterior design, a high-grade interior, significantly lower fuel consumption, additional driving assistance systems and a new generation of telematics characterise the comprehensively facelifted C-Class, which can now be ordered. The new models will be in the European dealerships from March 2011. Prices start with the 115 kW (156 hp) C 180 BlueEFFICIENCY at € 32,695.25 (Saloon) and € 34,361.25 (Estate, both including 19 percent VAT).
A reduction of up to 31 percent has been achieved in fuel consumption. All the rear-wheel drive C-Class models are equipped with the ECO start/stop function as standard. All the engine variants are now classed as BlueEFFICIENCY units, showing that they are particularly efficient and environmentally compatible in their use of fuel. In future all automatic versions with the exception of the C 300 CDI 4MATIC will feature the further-developed 7G-TRONIC PLUS seven-speed automatic transmission (introduction in the C 250 CDI 4MATIC in June 2011).
With a total of ten new driving assistance systems ranging from ATTENTION ASSIST drowsiness detection to DISTRONIC PLUS proximity control, the C-Class reaches a new level in safety. The assistance systems are based on the latest radar, camera and sensor technology, and are grouped into two packages: the Lane Tracking package (€ 892.50) consisting of Lane Keeping Assist and Blind Spot Assist as the systems that give a warning in hazardous situations. The Driving Assistance package PLUS (€ 2320.50) with DISTRONIC PLUS, BAS PLUS, PRE-SAFE® Brake, Active Lane Keeping Assist and Active Blind Spot Assist also has assistance systems that actively intervene following a warning.
In addition to the standard appointments – which now include a leather steering wheel – the two design and equipment lines ELEGANCE and AVANTGARDE are the basis for the individualisation programme of the C-Class. The two lines are now even more readily distinguishable from each other. This has been partly achieved by new trim in matt brown ash wood or dark burr walnut (ELEGANCE), and brushed aluminium or high-gloss black ash wood (AVANTGARDE). Standard features in the ELEGANCE line include luxury head retraints whose side bolsters can be adjusted as required. There are also new optional extras such as front seat climatisation (€ 1261.40) and the Stowage package (€ 95.20). The latter includes a spectacles compartment, a stowage box under the front seats, a double cupholder and a parcel net in the rear footwell.
The new C-Class also sees the debut of a new telematics generation which will also be gradually introduced in other model series. Major new features include greater operating convenience, larger displays, telephone directory transfer, display of SMS messages, wireless music reproduction via Bluetooth and a USB interface now accommodated in the centre armrest.
The multimedia system COMAND Online (from € 3070.20) now provides internet access for the first time. When the car is stationary, customers are able to browse freely or surf to a Mercedes-Benz Online service whose pages load particularly rapidly and are also easy to use while on the move. The integrated services include weather information and a special destination search via Google, as well as the option of downloading a route that has been previously configured on a PC using Google Maps and sent to the car. The navigation system of COMAND Online also has added functions. New features include a 3D display with plastic city views.
As a first in the C-Class, the Becker® MAP PILOT (€ 892.50) makes a low-cost navigation function, which can also be retrofitted, available for the entry-level Audio 20 CD radio. Its advantages over aftermarket solutions include integrated operation via the central controls and the Audio 20 display, a concealed location in the glove compartment and updating via an internet portal.
All basic prices at a glance:

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Model Cyl. cc kW/hp at rpm Saloon (euro)* Estate (euro)*
Petrol
 
C 180 BE 4/in-line 1796 115/156 5000 32,695.25 34,361.25
C 200 BE 4/in-line 1796 135/184 5250 34,718.25 36,384.25
C 250 BE 4/in-line 1796 150/204 5500 39,359.25 41,025.25
C 350 BE V6 3498 225/306 6500 46,529 48,195
C 350 4MATIC BE V6 3498 225/306 6500 48,909
Diesel
 
C 180 CDI BE 4/in-line 2143 88/120 2800 32,814.25 34,480.25
C 200 CDI BE 4/in-line 2143 100/136 2800 34,599.25 36,265.25
C 220 CDI BE 4/in-line 2143 125/170 3000 36,860.25 38,526.25
C 250 CDI BE 4/in-line 2143 150/204 4200 39,121.25 40,787.25
C 250 CDI 4MATIC BE 4/in-line 2143 150 (204) 43,881.25 45,547.25
C 300 CDI 4MATIC BE V6 2987 170/231 3800 47,540.50 49,206.50
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BE = BlueEFFICIENCY, * including 19 percent VAT

Source: Mercedes