Best Cash Back Car Deals September 2026: Up to $15,000

Last updated: September 10, 2026, updated monthly directly from manufacturer websites

Part of our monthly best car deals coverage. See lease and finance offers ranked.

The 2026 Audi A8 carries the largest cash incentive in September 2026 at $15,000, which is 15.8% of its $95,100 sticker. The Kia Niro EV takes the largest share of sticker at 25.2%, $10,000 off a $39,700 car.

We tracked 84 vehicles with a cash incentive this month, worth $273,000 in total. Hyundai appears 17 times, more than any other brand.

We list every advertised cash incentive each month and rank by share of sticker price, not by the headline dollar figure.
Key takeaways for September 2026
  • The Audi A8 and S8 share the largest cash figure at $15,000 each
  • The Kia Niro EV takes the largest share of sticker at 25.2%
  • 84 vehicles carry a cash incentive this month, worth $273,000 between them
  • Only 1 offer clears 20% of sticker, and 8 more sit between 12% and 20%

Highest cash incentives right now

The 10 largest cash incentives for September 2026, ranked by dollar value.

#1Cash Back Offer
2026 Audi A8 15.8% of sticker
Cash back
$15,000
Sticker
$95,100
Share of sticker
15.8%
Expires
Sep 30

The A8 carries the largest cash incentive of the month at $15,000.

On a $95,100 sticker that is 15.8%, and Audi is clearing 2026 stock before the next model year lands.

#2Cash Back Offer
2026 Audi S8 11.5% of sticker
Cash back
$15,000
Sticker
$130,000
Share of sticker
11.5%
Expires
Sep 30

The S8 gets the same $15,000, but on a $130,000 sticker it works out to 11.5%.

Same money, bigger car, smaller proportion. Judge cash offers as a share of price.

#3Cash Back Offer
2026 Infiniti QX80 11.9% of sticker
Cash back
$10,000
Sticker
$83,750
Share of sticker
11.9%
Expires
Sep 30

The 2026 QX80 pairs $10,000 in incentives with a 0% APR finance offer, which is rare.

Few vehicles this month let you take both the cash and a zero rate.

#4Cash Back Offer
2026 Kia Niro EV EV / Plug-in hybrid 25.2% of sticker
Cash back
$10,000
Sticker
$39,700
Share of sticker
25.2%
Expires
Sep 30

The Niro EV has the highest share of sticker anywhere on this page at 25.2%.

$10,000 off a $39,700 car, and it also leads the finance rankings at 30.31%.

#5Cash Back Offer
2026 Kia EV9 EV / Plug-in hybrid 18.2% of sticker
Cash back
$10,000
Sticker
$54,900
Share of sticker
18.2%
Expires
Sep 30

The EV9 takes $10,000 off a $54,900 sticker, 18.2% of the price.

Kia is spending more on electric incentives than anyone this month.

#6Cash Back Offer
2026 Chevrolet Silverado 1500 18.4% of sticker
Cash back
$7,000
Sticker
$38,145
Share of sticker
18.4%
Expires
Sep 30

The Silverado 1500 is the highest cash offer on any truck at $7,000.

That is 18.4% of a $38,145 sticker, and the truck also finances at 0% over 60 months.

#7Cash Back Offer
2026 Hyundai IONIQ 9 EV / Plug-in hybrid 11.9% of sticker
Cash back
$7,000
Sticker
$58,955
Share of sticker
11.9%
Expires
Sep 30

The IONIQ 9 gets $7,000, 11.9% of a $58,955 sticker.

Hyundai appears more than any other brand on this page, with 17 vehicles carrying cash.

#8Cash Back Offer
2027 Infiniti QX80 8.2% of sticker
Cash back
$7,000
Sticker
$85,590
Share of sticker
8.2%
Expires
Sep 30

The 2027 QX80 gets $7,000 in incentives on an $85,590 sticker, 8.2% of the price.

Infiniti puts more money on the outgoing 2026 car, so check the model year before you sign.

#9Cash Back Offer
2026 Audi Q8 6.9% of sticker
Cash back
$6,000
Sticker
$86,400
Share of sticker
6.9%
Expires
Sep 30

The Q8 takes $6,000 off, though on an $86,400 sticker that is only 6.9%.

Audi spreads large cash sums across its bigger cars, which dilutes the percentage.

#10Cash Back Offer
2026 Nissan Murano 14.4% of sticker
Cash back
$6,000
Sticker
$41,670
Share of sticker
14.4%
Expires
Sep 30

The Murano combines $6,000 in incentives with 0% APR and a $1,000 finance bonus.

At 14.4% of sticker it is one of the stronger mainstream offers this month.

Cash incentives stack with price negotiation

Get the vehicle price down first, then let the manufacturer incentive apply on top.

Get competing dealer prices

All cash back offers ranked

Every advertised cash incentive this September. Click any column header to sort.

#
Vehicle
Cash incentive
MSRP
% of MSRP
Expires

Sourced from manufacturer websites September 10, 2026. Share of sticker = cash incentive divided by MSRP. Cash incentives can usually be combined with a negotiated price but not always with a special finance rate.

Frequently asked questions

The 2026 Audi A8 at $15,000, matched by the Audi S8. Both are large luxury sedans, and the money is Audi clearing 2026 stock.
Not usually. $15,000 on a $130,000 S8 is 11.5% of the price, while $10,000 on a $39,700 Kia Niro EV is 25.2%. Ranking by share of sticker tells you which offer moves the price most.
Sometimes. Most manufacturers make you pick one. The Infiniti QX80 and Nissan Murano are exceptions this month, offering cash alongside 0% APR. Ask the dealer to write both into the quote before you agree.
Yes, in almost all cases. Negotiate the vehicle price down first, then apply the incentive on top. Dealers sometimes present the incentive as the discount, which it is not.
84 vehicles in September 2026, worth $273,000 in total. The smallest is $500 and the largest $15,000.

These offers may vary based on location, credit score, and financing terms, and are not guaranteed. Use our free service to check discount car prices to get the best prices that include current manufacturer offers and incentives.

Is the Rebate Actually the Better Deal?

Taking cash back usually means giving up promotional financing, so the rebate has to beat the interest you would have saved. On a large loan over a long term, it often does not.