Cryptic crossword No 3,642

Across

1. Looking back until now, not united within drive to lower taxes (3,5)
2. Toilet in place of volume inside car making something eruptive (7)
3. Smooch couple to get fashion accessory (7)
4. Cleaning lady having one place to sit (5)
5. A fine football association utters concerns (7)
6. Not as originally thought? Dream, reportedly great initially, to finish with sound of hesitation (11)
7. To write, on reflection, song of god (7)
8. Case of old flame being sufficient (7)
9. Equip too many guns as way to throw? (7)
10. European Union imports fuel regressively as practice (5)
11. Partly recommend Oz actor for South American city (7)
12. Takes a rain check when a cent is missing from neighboring old jars (8)
13. Slightly cold and kind of trendy (7)

Down

1. Five in Italy drowned, or so I've heard (6)
2. Most fortunate, quiet ratio hidden in haphazardly haste (8)
3. Up to AI to get involved to make perfect world (6)
4. In shambles, Haiti OK with former emperor (7)
5. Six French and celebrity appear before south-east Asian (10)
6. Melt assets, recycled to make metal towers (5,5)
7. Dinner, say, and fruit (4)
8. Protection dome missing last quarter after fraud (6)
9. Lesser than half-hearted roar (5)
10. Note written after snob riding vehicle as baggage (6)
11. Journalist under a cover said to have benefitted (7)
12. Realistic artist involves writer in harmonic (8)
13. Flower swallowing upset and infamous marquis (2,4)
14. Student becoming ingredient in dishes in series (6)
15. Left hook primarily hitting tree (5)
16. Collective understood when speaking (4)