Audi S8 vs BMW M5: cost to own

Verdict, over 6 years

The BMW M5 costs about $23,976 less

That's $333 a month. Closest matching trims: same fuel and drive where possible.
S8 TFSI quattro tiptronic$3,537/moTrue cost
M5 Sedan✓ $3,204/moTrue cost
2027 Audi S8
2027 Audi S8
Closest matching trim: S8 TFSI quattro tiptronic
Sticker (MSRP)$156,950
+$38,262→↓Freight, fees, HST
Drive away$195,212
+ running costs→↓− $81,374 resale
True cost$3,537/moA month to own, after resale
2027 BMW M5
2027 BMW M5
Closest matching trim: M5 Sedan
Sticker (MSRP)$142,900
+$32,449→↓Freight, fees, HST
Drive away$175,349
+ running costs→↓− $64,379 resale
True cost$3,204/moA month to own, after resale

Line by line

Price
Sticker (MSRP)$156,950✓ $142,900M5 by $14,050
Freight and fees, before tax$15,804✓ $12,276M5 by $3,528
Sales tax (HST)$22,458✓ $20,173M5 by $2,285
Drive-away price$195,212✓ $175,349M5 by $19,863
Running costs, 6 years
Fuel or charging$22,264✓ $10,881M5 by $11,383
Insurance (estimate)$27,253✓ $25,537M5 by $1,716
Maintenance (estimate)$12,850$12,850—
Loan rate6.5%6.5%—
Loan interest$40,004✓ $35,827M5 by $4,177
Lost return on your money$38,398✓ $34,565M5 by $3,833
Resale after 6 yrs✓ −$81,374−$64,379S8 by $16,995
Total
True cost$254,697✓ $230,721M5 by $23,976
True cost a month$3,537/mo✓ $3,204/moM5 by $333
You pay each month$4,065/mo✓ $3,549/moM5 by $516
Practical
Fuel typeHybridPlug-in hybrid—
Seats55—
Carry-ons, 2 peopleNot publishedNot published—
Cargo behind row 2, litresNot publishedNot published—
Length—5.10 m—
Resale % after 6 yrs✓ 52%45%—
US crash testNot rated yetNot rated yet—
Price
Sticker (MSRP)
S8 TFSI quattro tiptronic $156,950M5 Sedan ✓ $142,900Cheaper by M5 by $14,050
Freight and fees, before tax
S8 TFSI quattro tiptronic $15,804M5 Sedan ✓ $12,276Cheaper by M5 by $3,528
Sales tax (HST)
S8 TFSI quattro tiptronic $22,458M5 Sedan ✓ $20,173Cheaper by M5 by $2,285
Drive-away price
S8 TFSI quattro tiptronic $195,212M5 Sedan ✓ $175,349Cheaper by M5 by $19,863
Running costs, 6 years
Fuel or charging
S8 TFSI quattro tiptronic $22,264M5 Sedan ✓ $10,881Cheaper by M5 by $11,383
Insurance (estimate)
S8 TFSI quattro tiptronic $27,253M5 Sedan ✓ $25,537Cheaper by M5 by $1,716
Maintenance (estimate)
S8 TFSI quattro tiptronic $12,850M5 Sedan $12,850Cheaper by —
Loan rate
S8 TFSI quattro tiptronic 6.5%M5 Sedan 6.5%Cheaper by —
Loan interest
S8 TFSI quattro tiptronic $40,004M5 Sedan ✓ $35,827Cheaper by M5 by $4,177
Lost return on your money
S8 TFSI quattro tiptronic $38,398M5 Sedan ✓ $34,565Cheaper by M5 by $3,833
Resale after 6 yrs
S8 TFSI quattro tiptronic ✓ −$81,374M5 Sedan −$64,379Cheaper by S8 by $16,995
Total
True cost
S8 TFSI quattro tiptronic $254,697M5 Sedan ✓ $230,721Cheaper by M5 by $23,976
True cost a month
S8 TFSI quattro tiptronic $3,537/moM5 Sedan ✓ $3,204/moCheaper by M5 by $333
You pay each month
S8 TFSI quattro tiptronic $4,065/moM5 Sedan ✓ $3,549/moCheaper by M5 by $516
Practical
Fuel type
S8 TFSI quattro tiptronic HybridM5 Sedan Plug-in hybridCheaper by —
Seats
S8 TFSI quattro tiptronic 5M5 Sedan 5Cheaper by —
Carry-ons, 2 people
S8 TFSI quattro tiptronic Not publishedM5 Sedan Not publishedCheaper by —
Cargo behind row 2, litres
S8 TFSI quattro tiptronic Not publishedM5 Sedan Not publishedCheaper by —
Length
S8 TFSI quattro tiptronic —M5 Sedan 5.10 mCheaper by —
Resale % after 6 yrs
S8 TFSI quattro tiptronic ✓ 52%M5 Sedan 45%Cheaper by —
US crash test
S8 TFSI quattro tiptronic Not rated yetM5 Sedan Not rated yetCheaper by —

✓ marks the better figure. Resale for both is typical for their type and brand (unless you lease). These trims differ in fuel (hybrid vs plug-in hybrid), which drives part of the gap. Their stickers differ by $14,050.