In the US the main difference is in polity. Lutherans may have administrators they call Bishops but the office is elected and not necessarily permanent.
Also the government of the American Lutheran Churches is generally some variety of "presbygationalism" the local congregation owns the property and is volunatarily associated with the larger denominational body.
Also, Lutherans are generally tighter on the Sacraments, we only have two and we always only have two, Baptism and the Lord's Supper. Our doctrine about the sacraments is also more uniform.
Lutheran theology has certain focal points which may seem strange to an Anglican. Law and Gospel, Theology of Grace vs. Theology of Glory, etc. In general, Lutheran theology is a matter of contrasts and in some cases paradoxes, there can be a marked resistance to scholasticism in favor of what can, when corrupted, be reduced to a kind of blank fideism. In most cases it is held in a warm balance with a certain restrained and biblically oriented piety.
There is a lot more of course. There are places where Lutheranism and Anglicanism can look remarkably similar but I tend to think these are just similarities in packaging: both churches are liturgical and place a high value on history etc.
Admittedly, I come from a more conservative perspective. Other mileage may vary.
Interesting historical sidenote:
Cranmer was very interested in Lutheranism and it has been suggested that England was, at one time, during the reign of Henry VIII within an ace of adopting the Augsburg Confession.