The most common and most likely answer to this crossword clue is the 4 letter word SMOG which also is the latest solution we found used in New York Times in 1997.
Effect of auto exhaust crossword clue answers
Here's a list of possible crossword answers ranked by the most likely to least likely.
| Answer | Likelyness | Letters | 
|---|---|---|
| SMOG | 100 % | 4 | 
Words with a meaning similar to the clue: Effect of auto exhaust
These words may or may not be a possible solution to this crosswords clue.- tailpipe
 - used
 - tint
 - turbocharger
 - use
 - formedon
 - stoplight
 - unload
 - unloaded
 - unloading
 - exhaustively
 - tire
 
Crossword Answer definitions
SMOG noun- A noxious mixture of particulates and gases that is the result of urban air pollution.
 
- To get a smog check; to check a vehicle or have it checked for emissions.
 
More crossword clues leading to the same solutions
Here's a few more crossword clues - all leading to the identical solution