Where the Price Actually Breaks: Day Five and Day Twenty-One

There is no percentage discount anywhere in our pricing. The quote is the cheapest combination of three block sizes, which is exactly why adding a day can take money off the bill — and why a "weekly rate" is a promise nobody in this market should be making across a whole fleet.

Every price page in Los Angeles asserts a weekly discount and none of them says where it starts. That is not a small omission. A reader with dates in their hand cannot tell whether their own booking qualifies, and the answer is usually no, because on a lot of cars the weekly figure is not a discount at all. This page is the arithmetic underneath our own quote, published so you can check your dates against it before you fix them.

It exists for a specific reason. Ten price guides on this site once promised a three-day discount that the pricing code never contained, and the people who found out were readers. The fix is not softer language. It is publishing the mechanism.

There is no discount. There is a shortest path.

Every car carries three rates rather than one: a day, a block of five days, and a block of twenty-one days. Not every car carries all three — the flagship shelf mostly prices by the day and nothing else — but where they exist, the quote does one thing with them. It finds the cheapest combination of blocks that covers your dates.

That is a shortest-path calculation, not a rebate. Nine days is not "a week plus two"; it is whichever of five plus four days, or nine days, comes to less. Twenty-six days is whichever of a twenty-one-day block plus a five-day block, a twenty-one-day block plus five single days, or five five-day blocks plus a day comes to less. You never have to ask for the better arrangement and there is no phrasing that unlocks a cheaper tier — the calculation runs the same way for everybody.

Two consequences follow, and both of them surprise people.

• The quote can never exceed the days. The daily rate is always one of the options, so a longer booking is never worse than counting days. That is a floor, and it is worth knowing you have it.
• The blocks are named badly. The "weekly" rate buys five days, not seven. The "monthly" rate buys twenty-one, not thirty. Those two numbers are where everything interesting happens, and neither of them is where the words point.

The first break is the fifth day — and on one car it costs less than the fourth

Take the Corvette, which is the sharpest example in the fleet. Its five-day block prices below four days at the daily rate. Not below five days: below four. Five days of C8 bills as roughly 3.9 days of C8, which means the fifth day does not add to the rental line — it takes about a fifth of a day off it.

Here is the honest part, and it is the part a competitor would leave out. Damage-and-liability cover is charged per day and does not come in blocks, and sales tax sits on top of everything. So the fifth day lowers the rental line and raises the cover line, and the all-in total for five days lands a little above the total for four. What you actually get is a fifth day for roughly a sixth of what a day normally costs. That is a genuinely good deal and it is not the same sentence as "the fifth day is free", which is the sentence somebody else would write.

The same block does the same trick further along. Twenty-six days on a Corvette reaches for a twenty-one-day block plus a five-day block, which prices below twenty-one plus four loose days. The pattern is not magic; it is the same shortest path finding the same cheap block again.

The Corvette is unusual in this, though. On most of the fleet the five-day block saves something more modest — a Boxster's five days bill as about 4.4, a GLC's or a Z4's as about 4.8 — and on a good part of the fleet it saves nothing at all, which is the next section.

The break that does not exist, on more cars than you would think

On a large part of this fleet the five-day block prices above five days at the daily rate, which means the quote never uses it. Not "rarely uses it" — never. The calculation looks at the block, finds five loose days cheaper, and takes the loose days.

That is true of the Porsche Macan, the Range Rover Sport, both BMW 7s, the X5, the Mustang and the Wrangler, among others. On every one of those cars, five days costs exactly five days, seven days costs exactly seven days, and fourteen days costs exactly fourteen days. There is no weekly saving on those cars at any length short of three weeks.

Which is the whole problem with the phrase "weekly rates available", printed across a fleet page. It is not false about every car and it is not true about every car, and the reader cannot tell which one they are looking at. Ours is set out per car below rather than asserted once at the top.

The break that changes the bill is the twenty-first day

Everything above is a rounding error next to this. Every car that carries a twenty-one-day block drops sharply the moment the booking reaches twenty-one days, and it drops far enough that per-day cover and tax cannot undo it.

On a Corvette, twenty days bills as about 15.7 days. Twenty-one days bills as about 9. One more day removes the equivalent of nearly seven days from the rental line, and the all-in total for the longer booking is well below the shorter one even after cover.

On a Range Rover Sport — a car with no five-day break at all — twenty days bills as exactly twenty days and twenty-one bills as about fifteen. On a Macan, twenty-one days bills as under fifteen. The size of the step varies a great deal by car: the black BMW 7's twenty-one-day block only takes about a day and a half off, while the Corvette's takes nearly seven.

The practical version of this is short. If your dates land anywhere between eighteen and twenty days, ask what twenty-one costs before you book eighteen. On most of the fleet the longer booking is cheaper outright, and you get the car for the extra days as well.

What a week actually costs, car by car

Seven days is a period our tariff has no opinion about, so what a week costs depends entirely on whether the car's five-day block is any good. Measured in days of that car's own daily rate — which is the only comparison that survives a rate change — it looks like this:

Car	5 days bills as	7 days bills as	21 days bills as
Chevrolet Corvette	3.9 days	5.9 days	9.0 days
Porsche Boxster	4.4 days	6.4 days	14.0 days
Mercedes-AMG GT 43	4.8 days	6.8 days	17.5 days
BMW Z4	4.8 days	6.8 days	13.8 days
Mercedes GLC	4.8 days	6.8 days	16.3 days
Porsche Macan	5.0 days	7.0 days	14.8 days
Range Rover Sport	5.0 days	7.0 days	15.0 days
BMW 7	5.0 days	7.0 days	16.8 days

Read the second column first. Three of those eight cars pay full price for a week and there is nothing anybody can do about it, because five loose days are already cheaper than the block. Then read the fourth column, where every single car improves and several of them halve.

The Corvette is the outlier at both ends, which is worth saying plainly because it is the car most often asked about for a week: seven days of C8 bills as roughly six, and three weeks bills as roughly nine days. Nothing else in this half of the fleet moves like that. If the question is how much a Corvette costs for a week, the answer is "about six days" — and the more interesting answer is that three weeks costs about nine.

What does not shrink when the booking gets longer

Half the value of publishing the mechanism is publishing what it does not do, because that is where a reader gets caught out.

• Cover does not block. Damage-and-liability cover is priced per day off the car's deposit band and it is charged for every day of the booking. A twenty-one-day block cuts the rental line and does nothing at all to the cover line. On short bookings that is why the fifth day is cheap rather than free.
• Tax does not block. Los Angeles County sales tax sits on the subtotal, so it shrinks only in proportion to what the blocks already saved.
• Delivery is per direction, not per day. Airport delivery at LAX runs $75 standard, where the car waits in the parking structure, or $150 for the car at the terminal, each way. Collecting from us on Robertson Boulevard costs nothing, and our partner Beverly Hills hotels are complimentary. Because that line is fixed, it is the one cost that genuinely does dilute across a longer booking.
• The deposit does not change. It is a hold rather than a charge, set by the car rather than by the length of the rental, and it comes off 5–7 business days after the car is back.
• Some cars have no blocks at all. Most of the flagship shelf prices by the day and nothing else, so a fortnight there is fourteen days and no arithmetic will improve it. Which is precisely why the reliable move is to ask for the total on both sets of dates rather than to trust any rule, including the ones on this page.

That last point is the one the regulator makes too. The FTC's own guidance on comparing rental car prices is to compare the total cost rather than the advertised rate, because fees and options move the base price a long way. It is good advice against us as much as against anybody: our daily figure is not our quote, and the only number worth comparing is the one with everything in it.

Three questions worth asking before you fix the dates

If you are pricing a specific car rather than a principle, the whole set of rates and what sits outside them is on the rental prices page, and the Corvette has its own guide to which of the four to take once the dates are settled.

Corvette coupe or convertible, at the same rate → AMG GT 43, Corvette or Boxster →