It is a reading with a uniquely radiant atmosphere and one that I would urge you to add to your collection even if your instinct is to trust to grander symphonic visions and bigger names. - DSG, The Gramophone
It is a worthy contender and I recommend it. - Tony Duggan
Contrary to his recording of Symphony no. 4, Maazel’s recording of Mahler’s Symphony No. 5 get divided reviews. My opinion is pretty much like this one from Amazon.com:
This is one of the best Mahler 5 recordings I have heard. The Vienna Philharmonic sounds absolutely fabulous. Maazel's has recorded the whole Mahler cycle with Vienna. The performance of Mahler 4 has become very well known. The Mahler 5 seems to be not as popular. This might be because Bernstein also recorded a great live version with Vienna as well. Maazel's interpretation of the piece is very balanced and clear. Maazel brings to me what is a slightly more clear approach to this music, but still with great climaxes. I really like the opening movement and the third movement scherzo. The balance between all the sections is really amazing. You can hear every entrance and every voice. This is a triumph of the players and to the Sony recording engineers. I would highly recommend this Mahler recording to anyone.