The Flip Side:
On the other hand, you can expect car prices to go up tonight, across the board. Manufacturers have announced that they will be passing on the entire excise hike to the customer. Do note that excise is applied at the factory gate; thus, if your car is already in transit (or at the dealership), the old rates apply to your purchase.
Small Cars Less than 4 meters in length and with engine capacity smaller than 1.2L (Petrol) / 1.5L (Diesel) 
New Excise Duty : 12%
Old Excise Duty : 10%
Who? This category primarily consists of the hatchbacks. Thus, cars from the Tata Nano & Maruti Alto to the Maruti Swift & Hyundai i20 will see an excise increment of 2%. Expect price hikes in the range of Rs. 5,000 - 6,000 for a Santro, and upto Rs. 20,000 for some of the premium hatchbacks. Two compact sedans - the Maruti Dzire & Tata Indigo CS - also fall in this category of lowest excise duties.
Medium-sized Cars Over 4 meters in length, but with engines smaller than 1.5L (Petrol or Diesel) 
New Excise Duty : 24%
Old Excise Duty : 22%
Who? Primarily the C1 & C2 segment sedans, right from the Tata Manza & Toyota Etios to the Honda City & Fiat Linea. The Renault Fluence & Toyota Altis, with their puny diesel engines, fall into this category as well. On the other hand, the 1.6L sedans are bumped up into the higher slab (below). Price hikes of Rs. 12,000 - 20,000 are expected in the C1 & C2 segments.
*NOTE*: This Government clarification clearly states that all cars <1500 cc will be taxed @ 24%, while cars >1500 cc will be taxed @ 27%. There was some confusion earlier on this topic.
Large Cars Over 4 meters in length, and with engine size larger than 1.5L (Petrol or Diesel) 
New Excise Duty : 27%
Old Excise Duty : 22% + Rs. 15,000 (fixed duty)
Who? Some 1.6L sedans like the ol' Ford Fiesta, Hyundai Verna 1.6, VW Vento, Skoda Rapid & Maruti SX4 (petrol) now have to shell out 27% excise! Get this, the VW Polo 1.6 falls in the same excise slab as the Mercedes E-Class. This gives the 1.5L sedans (like the Honda City & new Ford Fiesta) a competitive advantage. The category goes right up to the Honda Accord & Toyota Fortuner who should witness a tag heftier by about Rs. 70,000 - 80,000. The C-Class & A4 also got more expensive by Rs. 1.5 - 2.0 lakhs, while the S-Class & 7-Series shoot up by about 5 lakh Rupees. The SIAM (Society of Indian Automobile Manufacturers) commented that no one expected additional duties on large cars. President Sandilya added that the SIAM actually expected excise duties to be reduced on this category of vehicle!
CBUs (Fully Imported Cars): 
New Basic Customs Duty : 75%
Old Basic Customs Duty : 60%
Who? All the imported sedans, coupes, SUVs & MUVS; cars like the VW Beetle & Porsche Cayenne to the Rolls Royce Phantom & Lamborghini Gallardo. Indeed, a bad time to buy that Ferrari 458 you were saving up for. The effective import duties will now be in the range of 135%. Personally, I'm very pleased with the tax hike on imported cars. You want to sell it here? Well, build the damn car here!
All luxury car makers termed the budget as
disappointing.
Hybrid & Electric Cars 
The Excise duty on replacement batteries has been reduced from 10% to 6%. Further, the excise duty on other "specified parts" of hybrid vehicles have also come down from 10% to 6%.